ฝ.๑.๒๒/ผ.๒๒
แบบฝกึ หดั 1.22
เขียนภาพแสดงวธิ ีคดิ ประโยคสัญลักษณ์ และแสดงวธิ ีทำ�
1. จงั หวัดหน่งึ มปี ระชากรชาย 789,717 คน มปี ระชากรหญงิ มากกวา่ ประชากรชาย
10,748 คน จังหวัดน้ีมปี ระชากรหญงิ ก่คี น
ประโยคสัญลักษณ์……………………………………………………….......…………………………...
วิธีทำ�
……………………………………………………………………………………………………...……..….….
………………………………………………………………………………………………………....…………
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……………………………………………………………………………………………………...……..….….
………………………………………………………………………………………………………....…………
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……………………………………………………………………………………………………...……..….….
ตอบ………………………………………….………………………………………………………..….…….
สถาบันส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
49
ฝ.๑.๒๒/ผ.๒๒
2. ป ที แี่ ลว้ พ่อมรี ายได้ 378,000 บาท ปนี พี้ อ่ มรี ายได้น้อยกว่าปีท่ีแลว้ 37,500 บาท
ปีน้พี อ่ มีรายไดก้ ีบ่ าท
ประโยคสญั ลกั ษณ์……………………………………………………….......…………………………...
วธิ ีทำ�
……………………………………………………………………………………………………...……..….….
………………………………………………………………………………………………………....…………
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………………………………………………………………………………………………………....…………
ตอบ………………………………………….………………………………………………………..….…….
สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
50
ฝ.๑.๒๒/ผ.๒๒
3. ถา้ ทด่ี นิ ราคา 1,500,000 บาท และราคาทด่ี นิ นอ้ ยกวา่ คา่ กอ่ สรา้ งบา้ น 900,000 บาท
คา่ ก่อสรา้ งบ้านราคาเทา่ ไร
ประโยคสญั ลกั ษณ…์ …………………………………………………….......…………………………...
วธิ ที ำ�
……………………………………………………………………………………………………...……..….….
………………………………………………………………………………………………………....…………
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………………………………………………………………………………………………………....…………
ตอบ………………………………………….………………………………………………………..….…….
สถาบนั สง่ เสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
51
ฝ.๑.๒๒/ผ.๒๒
4. ปนี บี้ รษิ ทั สง่ ออกสนิ คา้ ได้ 534,000 กลอ่ ง ปนี สี้ ง่ ออกไดม้ ากกวา่ ปที แี่ ลว้ 35,000 กลอ่ ง
ปที แี่ ล้วบริษัทส่งออกสนิ ค้าได้กก่ี ล่อง
ประโยคสญั ลักษณ…์ …………………………………………………….......…………………………...
วิธที ำ�
……………………………………………………………………………………………………...……..….….
………………………………………………………………………………………………………....…………
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………………………………………………………………………………………………………....…………
ตอบ………………………………………….………………………………………………………..….…….
สถาบนั ส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
52
ฝ.๑.๒๓/ผ.๒๓
แบบฝึกหัด 1.23
สร้างโจทยป์ ญั หา 2 ข้อ จากประโยคสญั ลกั ษณท์ ี่กำ� หนด
1. 6,968,000 + 2,500,000 =
1) …………………………………………………………………………………………………..………….
…………………………………………………………………………………………………..………….
…………………………………………………………………………………………………..………….
……………………………………………………………………………………………………..……….
2) …………………………………………………………………………………………………..………….
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……………………………………………………………………………………………………..……….
2. 524,000 – 78,500 =
1) …………………………………………………………………………………………………..………….
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2) …………………………………………………………………………………………………..………….
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……………………………………………………………………………………………………..……….
สถาบันสง่ เสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
53
ฝ.๑.๒๔/ผ.๒๔
แบบฝกึ หัด 1.24
ใชข้ อ้ มูลจากภาพท่ีก�ำหนด สรา้ งโจทย์ปญั หา และหาคำ� ตอบ
24,000 บาท 19,000 บาท
12,500 บาท 30,900 บาท
1. โจทยป์ ญั หาการบวก
ประโยคสัญลักษณ์ ...................................................................................................
โจทย์ .........................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
ตอบ ..........................................................................................................................
สถาบันสง่ เสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
54
ฝ.๑.๒๔/ผ.๒๔
2. โจทย์ปญั หาการลบ
ประโยคสัญลักษณ์ ...................................................................................................
โจทย์ .........................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
ตอบ ..........................................................................................................................
3. โจทยป์ ญั หาการบวกหรือโจทย์ปัญหาการลบ
ประโยคสญั ลกั ษณ์ ...................................................................................................
โจทย์ .........................................................................................................................
...................................................................................................................................
...................................................................................................................................
...................................................................................................................................
ตอบ ..........................................................................................................................
สถาบันสง่ เสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
55
ฝ.๑.๒๕/ผ.๒๕
แบบฝกึ หดั 1.25
1. แสดงวธิ ที �ำ
1) 207,341 x 7 = 2) 9 × 1,987,643 =
วธิ ที �ำ ................................................
วิธที �ำ ................................................ ...........................................................
...........................................................
........................................................... ...........................................................
...........................................................
........................................................... ...........................................................
...........................................................
...........................................................
...........................................................
...........................................................
...........................................................
2. เตมิ ผลคณู 2) 14,523 x 6 = ..........................
1) 25,130 x 4 = .......................... 4) 53,942 x 3 = ..........................
3) 2 x 75,734 = .......................... 6) 8 x 97,260 = ..........................
5) 27,153 x 4 = .......................... 8) 860,042 x 8 = ..........................
7) 4 x 87,203 = .......................... 10) 7 x 258,102 = ..........................
9) 350,837 x 5 = ..........................
สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
56
ฝ.๑.๒๖/ผ.๒๖
แบบฝกึ หดั 1.26
1. หาผลคณู ของโจทย์การคูณตอ่ ไปนี้
1) 1,205 × 20 = 2) 40 × 3,511 =
1,205 × 20 = ............................. 40 × 3,511 = .............................
= ............................. = .............................
= ............................. = .............................
3) 41,027 × 60 = 4) 30 × 26,910 =
41,027 × 60 = ............................. 30 × 26,910 = .............................
= ............................. = .............................
= ............................. = .............................
5) 20,009 × 90 = 6) 70 × 77,271 =
20,009 × 90 = ............................. 70 × 77,271 = .............................
= ............................. = .............................
= ............................. = .............................
2. เติมผลคณู
1) 25,130 × 40 = ........................ 6) 14,523 × 60 = ........................
2) 20 × 75,734 = ........................ 7) 53,942 × 3 = ........................
3) 27,153 × 40 = ........................ 8) 80 × 97,260 = ........................
4) 40 × 87,203 = ........................ 9) 860,042 × 80 = ........................
5) 350,837 × 50 = ........................ 10) 70 × 258,102 = ........................
สถาบนั สง่ เสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
57
ฝ.๑.๒๗/ผ.๒๗
แบบฝกึ หัด 1.27
1. หาผลคูณของโจทยก์ ารคณู ตอ่ ไปน้ี
1) 2,425 × 200 = 4) 300 × 1,517 =
2,425 × 200 = ............................. 300 × 1,517 = .............................
= ............................. = .............................
= ............................. = .............................
2) 21,329 × 400 = 5) 700 × 16,090 =
21,329 × 400 = ............................. 700 × 16,090 = .............................
= ............................. = .............................
= ............................. = .............................
3) 50,009 × 600 = 6) 800 × 47,277 =
50,009 × 600 = ............................. 800 × 47,277 = .............................
= ............................. = .............................
= ............................. = .............................
2. เติมผลคณู =
=
1) 987 x 400 =
2) 9,000 x 640 =
3) 45,900 x 300 =
4) 45,800 x 600 =
5) 59,800 x 400
6) 386,000 x 200
สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
58
ฝ.๑.๒๘/ผ.๒๘
แบบฝึกหดั 1.28
1. หาผลคูณ
1) 1,234 x 34 =
1 2 3 44
3 x
4936 1234 x 4
37020 1234 x 30
41956
ตอบ .. . . .. .๔...๑...,.๙..๕...๖.............
2. แสดงวิธที �ำ
1) 34 x 219 =
ว.. .ธิ ..ีท...ำ� .. . .......................................................................................................................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
ตอบ .............................................................................................................
2) 508 x 32 =
.ว. .ธิ ..ีท...�ำ.. . .......................................................................................................................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
ตอบ .............................................................................................................
สถาบันส่งเสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
59
ฝ.๑.๒๘/ผ.๒๘
3) 1,056 × 16 =
.ว. .ธิ ..ีท...ำ� .. . .......................................................................................................................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
ตอบ .............................................................................................................
4) 32 × 4,216 =
.ว. .ิธ..ที ...�ำ.. . .......................................................................................................................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
ตอบ .............................................................................................................
5) 2,099 × 41 =
ว.. .ธิ ..ที...�ำ.. . .......................................................................................................................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
ตอบ .............................................................................................................
สถาบนั ส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
60
ฝ.๑.๒๘/ผ.๒๘
6) 82 × 16,900 =
ว.. .ิธ..ที...ำ� .. . .......................................................................................................................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
ตอบ .............................................................................................................
3. หาผลคณู =
=
1) 2,134 x 15 =
2) 4,156 x 13 =
3) 3,820 x 22
4) 4,070 x 65
สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
61
ฝ.๑.๒๙/ผ.๒๙
แบบฝกึ หดั 1.29
แสดงวิธหี าผลคณู
1. 412 x 706 =
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2. 651 x 513 =
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สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
62
ฝ.๑.๒๙/ผ.๒๙
3. 382 x 1,459 =
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4. 3,678 x 412 =
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สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
63
ฝ.๑.๓๐/ผ.๓๐
แบบฝึกหัด 1.30
แสดงวิธีทำ�
1. 10,245 x 515 =
วธิ ีท�ำ ..........................................................................................................
.....................................................................................................................
.....................................................................................................................
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.....................................................................................................................
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ตอบ ..........................................................................................................
2. 52,525 x 327 =
วิธที ำ� ..........................................................................................................
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.....................................................................................................................
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ตอบ ..........................................................................................................
สถาบนั ส่งเสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
64
ฝ.๑.๓๐/ผ.๓๐
3. 214,795 x 38 =
วิธีทำ� ..........................................................................................................
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ตอบ ..........................................................................................................
4. 12,553 x 148 =
วิธีทำ� ..........................................................................................................
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.....................................................................................................................
.....................................................................................................................
ตอบ ..........................................................................................................
สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
65
ฝ.๑.๓๐/ผ.๓๐
5. 41,586 x 3,927 =
วธิ ที ำ� ..........................................................................................................
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ตอบ ..........................................................................................................
6. 95,131 x 4,369 =
วิธที �ำ ..........................................................................................................
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.....................................................................................................................
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ตอบ ..........................................................................................................
สถาบันส่งเสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
66
ฝ.๑.๓๑/ผ.๓๑
แบบฝกึ หัด 1.31
แสดงวิธหี าผลหารโดยการหารยาว พรอ้ มตรวจคำ� ตอบ
1. 1,404 ÷ 6 = 2. 6,810 ÷ 6 =
วิธที ำ� ............................................. วิธที �ำ .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
ตอบ .............................................
............................................. .............................................
.............................................
ตรวจคำ� ตอบ ................................ ตอบ .............................................
............................................. .............................................
............................................. ตรวจค�ำตอบ ................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
สถาบนั ส่งเสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
67
ฝ.๑.๓๑/ผ.๓๑
3. 4,312 ÷ 8 = 4. 194,607 ÷ 7 =
วธิ ีทำ� ............................................. วิธีทำ� .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
ตอบ ............................................. .............................................
............................................. .............................................
ตรวจคำ� ตอบ ................................ ตอบ .............................................
............................................. .............................................
............................................. ตรวจค�ำตอบ ................................
............................................. .............................................
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............................................. .............................................
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............................................. .............................................
สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
68
ฝ.๑.๓๑/ผ.๓๑
5. 373,688 ÷ 4 = 6. 180,837 ÷ 9 =
วิธที �ำ ............................................. วิธที ำ� .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. ตอบ .............................................
............................................. .............................................
............................................. ตรวจคำ� ตอบ ................................
............................................. .............................................
ตอบ ............................................. .............................................
............................................. .............................................
ตรวจค�ำตอบ ................................ .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
สถาบนั สง่ เสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
69
ฝ.๑.๓๒/ผ.๓๒
แบบฝกึ หดั 1.32
แสดงการหารสัน้ และตรวจค�ำตอบ
ตัวอยา่ งที่ 1 1,404 ÷ 6 =
วิธีทำ� ......6.. ..)_..._1.._..4._..0._..2._4..2_.......................................................................................
...... ...........2....3...4..2.......................................................................................
......1..,.4..0..4....÷....6...=....2...3..4................................................................................
ตอบ ......๒...๓..๔......................................................................................................
......ต..ร..ว..จ..ค...�ำ..ต..อ...บ.. .. .2..3..4....x...6....=....1..,.4..0..4..........................................................
1. 6,810 ÷ 6 =
วิธที �ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
2. 4,312 ÷ 8 =
วิธที �ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
สถาบันสง่ เสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
70
ฝ.๑.๓๒/ผ.๓๒
3. 5,260 ÷ 5 =
วิธีทำ� .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
4. 17,124 ÷ 4 =
วิธที �ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
5. 68,358 ÷ 3 =
วิธีทำ� .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
6. 353,570 ÷ 7 =
วิธีท�ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
สถาบันสง่ เสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
71
ฝ.๑.๓๓/ผ.๓๓
แบบฝึกหัด 1.33
แสดงวิธีหาผลลพั ธ์โดยการหารยาว พร้อมตรวจค�ำตอบ
1. 719 ÷ 8 = 2. 1,386,479 ÷ 9 =
วธิ ที ำ� ............................................. วิธีทำ� .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
ตอบ ............................................. .............................................
............................................. .............................................
ตรวจค�ำตอบ ................................ .............................................
............................................. .............................................
............................................. ตอบ .............................................
............................................. .............................................
............................................. ตรวจคำ� ตอบ ................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
สถาบันส่งเสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
72
ฝ.๑.๓๓/ผ.๓๓
3. 411,200 ÷ 3 = 4. 209,115 ÷ 8 =
วิธีทำ� ............................................. วิธีทำ� .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
ตอบ ............................................. ตอบ .............................................
............................................. .............................................
ตรวจค�ำตอบ ................................ ตรวจคำ� ตอบ ................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
73
ฝ.๑.๓๓/ผ.๓๓
5. 446,425 ÷ 3 = 6. 280,888 ÷ 9 =
วิธีทำ� ............................................. วิธที ำ� .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
ตอบ ............................................. ตอบ .............................................
............................................. .............................................
ตรวจค�ำตอบ ................................ ตรวจค�ำตอบ ................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
............................................. .............................................
สถาบันส่งเสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
74
ฝ.๑.๓๔/ผ.๓๔
แบบฝกึ หดั 1.34
แสดงวธิ หี าผลลพั ธโ์ ดยการหารกัน พรอ้ มตรวจค�ำตอบ
1. 719,095 ÷ 8 =
วิธที �ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
2. 1,386,479 ÷ 9 =
วธิ ีท�ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
3. 411,200 ÷ 3 =
วธิ ที ำ� .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
75
ฝ.๑.๓๔/ผ.๓๔
4. 209,115 ÷ 8 =
วธิ ีท�ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
5. 446,425 ÷ 3 =
วธิ ีทำ� .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
6. 280,888 ÷ 9 =
วิธที �ำ .................................................................................................................
.................................................................................................................
.................................................................................................................
ตอบ .................................................................................................................
.................................................................................................................
.................................................................................................................
.................................................................................................................
สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
76
ฝ.๑.๓๕/ผ.๓๕
แบบฝกึ หัด 1.35
หาผลลพั ธ์และตรวจสอบค�ำตอบ
ตวั วอ ิธย ีท ่า งำ� ห. . .า. .ผ . .ล.2.ล.0..ัพ .)_.ธ.01._.ข์ 03.._อ.62.ง_.60.._1...,.3..2..0....÷....2..0...=....................................................................
. .............................1..2..0.. ..................2..0....×....6...ส..บิ........................................................
. .............................1..2..0...........................................................................................
. .............................1..2..0.. ..................2..0....×....6...ห...น..่ว..ย...................................................
. .................................0...........................................................................................
.............................................................................................................................
.ต...ร..ว..จ..ส..อ...บ.. ......6..6....×....2..0.. ........=... .1...,.3..2..0....................................................................
.ด...งั ..น..้ัน... ............1..,.3...2..0....÷...2...0.. ..=... .6...6.........................................................................
ต อบ .............๖...๖..................................................................................................
1) 600 ÷ 50 =
วธิ ที �ำ .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ...................................................................................................................
สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
77
ฝ.๑.๓๕/ผ.๓๕
2) 1,474 ÷ 70 =
วิธที ำ� .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
3) 880 ÷ 80 =
วธิ ที �ำ .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบันสง่ เสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
78
ฝ.๑.๓๕/ผ.๓๕
4) 11,521 ÷ 90 =
วธิ ีทำ� .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบนั ส่งเสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
79
ฝ.๑.๓๖/ผ.๓๖
แบบฝกึ หดั 1.36
หาผลลัพธ์และตรวจสอบ
ตวั อย่าง หาผลลพั ธข์ อง 1,904 ÷ 34 และตรวจสอบ
.......3..4... )_...01_..09._.50.._64..._.........................................................................................
วิธที �ำ
. ............................1..7..0... .................3..4....×....5...ส...บิ ........................................................
. ............................2..0..4............................................................................................
. ............................2..0..4... .................3..4....×....6...ห...น...่ว..ย...................................................
. ................................0............................................................................................
.............................................................................................................................
.ต..ร..ว..จ..ส...อ..บ... ......5..6...×....3...4.. .......=... ..1..,.9..0...4....................................................................
.ด..งั..น...้นั .. .............1..,.9..0..4....÷....3..4.. ..=... ..5..6..........................................................................
ต อบ ............๕...๖...................................................................................................
1. 420 ÷ 35 =
วธิ ที ำ� .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบันส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
80
ฝ.๑.๓๖/ผ.๓๖
2. 1,248 ÷ 16 =
วิธที �ำ .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
3. 1,456 ÷ 43 =
วิธีท�ำ .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
81
ฝ.๑.๓๖/ผ.๓๖
4. 12,896 ÷ 52 =
วธิ ีทำ� .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบนั ส่งเสริมการสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
82
ฝ.๑.๓๗/ผ.๓๗
แบบฝึกหัด 1.37
หาผลลัพธ์และตรวจสอบ
ตวั อย่าง 14,065 ÷ 485 =
.......3..4... )_..01._.04.._.00..26_..95._.........................................................................................
วิธที �ำ
. ..............................9..7..0.. ................4..8...5...×....2....ส..บิ......................................................
. ............................4..3..6..5..........................................................................................
. ............................4..3..6..5.. ................4..8...5...×....9....ห..น...่ว..ย.................................................
. ..................................0..........................................................................................
.............................................................................................................................
.ต..ร..ว..จ..ส...อ..บ... ......4..8..5....×...2...9.. ..........=.. ..1..4...,.0..6..5..............................................................
.ด..งั..น...นั้ .. .............1..4..,.0..6...5...÷....4..8..5... ..=.. ..2..9......................................................................
ต อบ ............๒...๙...................................................................................................
1) 5,760 ÷ 240 =
วิธีทำ� .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
83
ฝ.๑.๓๗/ผ.๓๗
2) 13,265 ÷ 132 =
วธิ ที ำ� .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
3) 14,952 ÷ 356 =
วิธที �ำ .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
84
ฝ.๑.๓๗/ผ.๓๗
4) 50,185 ÷ 408 =
วธิ ีท�ำ .................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
.............................................................................................................................
ตอบ ..................................................................................................................
สถาบันสง่ เสริมการสอนวทิ ยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
85
ฝ.๑.๓๘/ผ.๓๘
แบบฝึกหดั 1.38
หาจำ� นวนนับทีแ่ ทน
1. × 15 = 180 2. 43 × = 1,247
วธิ ีท�ำ เน่อื งจาก ................. = .............. วธิ ีทำ� เน่ืองจาก ................. = ..............
แสดงว่า .................. = .............. แสดงว่า .................. = ..............
จะได้ ....................... = .............. จะได้ ....................... = ..............
ตรวจสอบ ................................... ตรวจสอบ ...................................
จ�ำนวนนับท่แี ทน คอื ................. จำ� นวนนบั ทแี่ ทน คอื ..................
ตอบ .................................... ตอบ ....................................
3. 130 × = 910 4. × 50 = 1,450
วิธที �ำ เนือ่ งจาก ................. = .............. วธิ ีทำ� เนื่องจาก ................. = ..............
แสดงวา่ .................. = .............. แสดงว่า .................. = ..............
จะได้ ....................... = .............. จะได้ ....................... = ..............
ตรวจสอบ ................................... ตรวจสอบ ...................................
จำ� นวนนับทแี่ ทน คอื ................. จ�ำนวนนับทแี่ ทน คอื ..................
ตอบ .................................... ตอบ ....................................
สถาบนั ส่งเสรมิ การสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
86
ฝ.๑.๓๙/ผ.๓๙
แบบฝกึ หัด 1.39
หาจ�ำนวนนบั แทน
ตัวอยา่ ง 41 × ทมี่ ากกวา่ 410 ที่จะใกลเ้ คยี งกบั 410 มากที่สดุ
วธิ ที �ำ ถ้า 41 × = 410
จะได้ = 410 ÷ 41
= 10
แสดงว่า 41 × 10 = 410 และ 41 × 11 มากกวา่ 410
จำ� นวนนับท่แี ทน คอื 11
ตอบ ๑๑
1. 17 × ทมี่ ากกว่า 255 และ 2. × 8 ที่น้อยกว่า 496 และ
ใกลเ้ คียงกับ 255 มากที่สดุ ใกล้เคยี งกบั 496 มากทสี่ ุด
วธิ ที �ำ ถ้า .................. = .................. วธิ ีทำ� ถา้ .................. = ..................
จะได้ .................. = .................. จะได ้ .................. = ..................
.................. = .................. .................. = ..................
แสดงว่า ...................................... แสดงว่า ......................................
.................................................... ....................................................
จำ� นวนนบั ทแ่ี ทน คือ ................ จ�ำนวนนับทแ่ี ทน คือ ................
ตอบ ………………...........……… ตอบ ………………...........………
สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
87
ฝ.๑.๓๙/ผ.๓๙
3. 70 × ที่มากกว่า 1,190 และ 4. × 61 ที่นอ้ ยกว่า 2,074 และ
ใกลเ้ คียงกบั 1,190 มากท่สี ดุ ใกล้เคยี งกับ 2,074 มากทีส่ ุด
วิธีท�ำ ถ้า .................. = .................. วิธีทำ� ถา้ .................. = ..................
จะได ้ .................. = .................. จะได ้ .................. = ..................
.................. = .................. .................. = ..................
แสดงว่า ...................................... แสดงว่า ......................................
.................................................... ....................................................
จำ� นวนนบั ที่แทน คือ ................ จำ� นวนนับทแ่ี ทน คอื ................
ตอบ ………………...........……… ตอบ ………………...........………
สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
88
ฝ.๑.๔๐/ผ.๔๐
แบบฝึกหัด 1.40
หาจ�ำนวนนบั ทีแ่ ทน
ตัวอยา่ ง ÷ 33 = 13 1. 198 ÷ = 18
วิธที �ำ เนื่องจาก ÷ 33 = 13 วิธที ำ� เน่ืองจาก .....................................
จะได้ = 13 × 33 จะได้ .....................................
= 429 .....................................
จ�ำนวนนับท่ีแทน คือ 429 จ�ำนวนนับท่ีแทน คอื ..........
ตอบ ๔๒๙ ตอบ ....................................
2. ÷ 42 = 10 3. 627 ÷ = 57
วิธที �ำ เนือ่ งจาก .................................... วธิ ที �ำ เนอื่ งจาก .....................................
จะได ้ ..................................... จะได้ .....................................
..................................... .....................................
จำ� นวนนบั ทีแ่ ทน คือ .......... จำ� นวนนบั ที่แทน คอื ..........
ตอบ .................................... ตอบ ....................................
4. ÷ 50 = 29
วธิ ีทำ� เนอ่ื งจาก ..........................................
จะได้ .............................................
.............................................
จำ� นวนนบั ท่แี ทน คอื ..............
ตอบ ....................................
สถาบันส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
89
ฝ.๑.๔๑/ผ.๔๑
แบบฝึกหดั 1.41
นกั เรียนเตมิ ข้อความและตัวเลขแสดงจำ� นวนในชอ่ งวา่ ง
1) ครซู ้ือพดั ลมติดอาคารเรยี น 22 ตวั ราคาตวั ละ 1,150 บาท ครตู ้องใชเ้ งินท้ังหมเทา่ ใด
1. สิ่งทโี่ จทยถ์ ามอะไร ...............................................................................................
2. ส่งิ ท่โี จทยบ์ อกคอื อะไร ..........................................................................................
................................................................................................................................
3. หาจำ� นวนเงนิ ทค่ี รูตอ้ งใช้เงนิ ทงั้ หมดอย่างไร ........................................................
................................................................................................................................
4. เขยี นเปน็ ประโยคสญั ลกั ษณไ์ ดอ้ ยา่ งไร .................................................................
5. ครูต้องใช้เงินท้งั หมดเทา่ ใด ...................................................................................
6. ถ้านกั เรยี นใช้เครือ่ งคดิ เลขในการหาคำ� ตอบจะไดค้ ำ� ตอบเท่าไร ...........................
2) ครแู บ่งส้มทง้ั หมด 960 ผล ใหน้ กั เรยี น 80 คน คนละเทา่ ๆ กัน จะได้คนละก่ีผล
1. สิง่ ที่โจทยถ์ ามอะไร ...............................................................................................
2. สง่ิ ทีโ่ จทยบ์ อกคอื อะไร .........................................................................................
................................................................................................................................
3. หาจ�ำนวนสม้ ทีน่ กั เรยี นแต่ละคนจะได้รบั อย่างไร .................................................
................................................................................................................................
4. เขยี นเป็นประโยคสัญลักษณ์ไดอ้ ยา่ งไร .................................................................
5. นักเรียนไดส้ ม้ คนละกีผ่ ล .......................................................................................
6. ถ้านกั เรียนใช้เคร่ืองคิดเลขในการหาคำ� ตอบจะได้ค�ำตอบเท่าไร............................
สถาบันสง่ เสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
90
ฝ.๑.๔๒/ผ.๔๒
แบบฝึกหดั 1.42
เขียนเปน็ ประโยคสัญลักษณแ์ ละแสดงวิธที ำ�
1. ชาวสวนเกบ็ มะม่วง 1,750 กิโลกรมั นำ� มาจัดใส่เข่ง เขง่ ละ 25 กโิ ลกรมั จะไดก้ ีเ่ ขง่
ประโยคสัญลักษณ์ .....................................................................................................
วธิ ีท�ำ .........................................................................................................................
.........................................................................................................................
.........................................................................................................................
.........................................................................................................................
ตอบ .........................................................................................................................
2. ออมสนิ เก็บเงินทกุ วนั วันละ 14 บาท เดือนธนั วาคมออมสนิ จะมเี งนิ ทั้งหมดกบ่ี าท
ประโยคสัญลกั ษณ์ .....................................................................................................
วธิ ีท�ำ .........................................................................................................................
.........................................................................................................................
.........................................................................................................................
.........................................................................................................................
ตอบ .........................................................................................................................
สถาบันส่งเสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
91
ฝ.๑.๔๓/ผ.๔๓
แบบฝึกหัด 1.43
เขียนเป็นประโยคสญั ลักษณ์และแสดงวธิ ีทำ�
1. โ รงงานแหง่ หนง่ึ รบั เยบ็ เสอื้ ใหล้ กู คา้ จำ� นวนหนงึ่ โดยเยบ็ ไดว้ นั ละ 120 ตวั เปน็ เวลา 5 วนั
โรงงานแห่งนเ้ี ยบ็ เสอ้ื ให้ลกู ค้าไดก้ ่ตี วั
ประโยคสญั ลักษณ์ .....................................................................................................
วธิ ที �ำ .........................................................................................................................
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ตอบ .........................................................................................................................
2. ค รูมดี ินสอจ�ำนวนหนง่ึ แจกให้เด็กคนละ 6 แทง่ แจกใหเ้ ดก็ ไปท้งั หมด 170 คน ครมู ี
ดนิ สอท้งั หมดก่แี ท่ง
ประโยคสัญลกั ษณ์ .....................................................................................................
วธิ ที �ำ .........................................................................................................................
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ตอบ .........................................................................................................................
สถาบนั ส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
92
ฝ.๑.๔๔/ผ.๔๔
แบบฝกึ หดั 1.44
1. สร้างโจทยป์ ัญหาการคณู ท่ีกำ� หนดให้ พรอ้ มแสดงวธิ ที �ำ
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ตอบ ........................................................................
2. สรา้ งโจทย์ปัญหาจากประโยคสัญลักษณ์ 1,480 ÷ 40 = พรอ้ มแสดงวธิ ที �ำ
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ตอบ ............................................................................
3. สร้างโจทย์ปัญหาการคณู ทม่ี คี �ำตอบ คือ 5,000 พร้อมแสดงวธิ ที �ำ
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ตอบ ............................................................................
สถาบันสง่ เสริมการสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
93
ฝ.๑.๔๕/ผ.๔๕
แบบฝึกหดั 1.45
1. จงแสดงวธิ ที ำ�
1) (20,740 – 15,593) x 53 =
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2) (91,467 + 35,495) ÷ 29 =
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สถาบันสง่ เสริมการสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
94
ฝ.๑.๔๕/ผ.๔๕
3) 12,000 x (50,241 – 48,225) =
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2. เตมิ เคร่อื งหมาย > หรือ < หรอื = ใน ใหถ้ ูกตอ้ ง
1) (639 × 74) + 41,860 (639 × 75) + 4,186
2) (561,729 - 61,729) × 45 (861,729 - 561,729) × 45
3) (1,568 ÷ 4) × 2 (1,568 × 4) ÷ 2
4) 54, 984 - (800 × 5) 64, 984 - (800 × 15)
5) (1,600 ÷ 4) × 20 (1,600 ÷ 40) × 2
สถาบนั ส่งเสรมิ การสอนวทิ ยาศาสตร์และเทคโนโลยี (สสวท.)
95
ฝ.๑.๔๖/ผ.๔๖
แบบฝกึ หดั 1.46
แสดงวธิ ีทำ�
1. (369 x 17) + (296 x 105) =
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2. (375 x 76) – (64,480 ÷ 52) =
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สถาบนั ส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
96
ฝ.๑.๔๖/ผ.๔๖
3. (120,750 + 18,462) – (232,092 ÷ 12) =
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4. (405,840 + 122,541) – (21,340 x 18) =
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5. (31,560 x 16) – (20,131 – 19,891) =
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สถาบนั ส่งเสรมิ การสอนวิทยาศาสตรแ์ ละเทคโนโลยี (สสวท.)
97
ฝ.๑.๔๗/ผ.๔๗
แบบฝึกหัด 1.47
แสดงวิธที ำ�
1. 560,134 – 281,329 + 149,087 =
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2. 520,837 + 1,465 – 192 – 219 =
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สถาบนั สง่ เสรมิ การสอนวิทยาศาสตร์และเทคโนโลยี (สสวท.)
98
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