Panduan PdP Matematik Tahun 4 Versi DLP

NUMBERS AND OPERATIONS: YEAR 4
Worksheet 1

Name : _____________________________________ Class : ____________

A. Complete the number pattern in ascending order.

1. 15 048, 16 048, ,,
2. 27 999,
3. 43 105, 37 999, , 57 999,
4. 16 394,
5. 24 199, , 43 305, 43 405,
6. 69 470,
7. 73 456, 26 394, , , 56 394
8. 25 888,
25 199, , 27 199,

, 71 470, 72 470,

, , 73 756, 73 856

35 888, , 55 888,

State the number patterns :
a. ________________________________________________________
b. ________________________________________________________
c. ________________________________________________________

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NUMBERS AND OPERATIONS: YEAR 4

Name : _____________________________________ Worksheet 2
Class : ____________

A. Complete the number pattern in descending order.

1. 78 124, 77 124, , , 74 124

2. 62 811, 52 811, , , 22 811

3. 79 813, , 79 613, 79 513,

4. , , 61425, 51425,

5. 97 896, , 95 896, 94 896,

6. , , 11 234, 10 234,

7. 28 797, , 26 797, ,

8. 81 965, , , 81 665,

State the number patterns :
a. ________________________________________________________
b. ________________________________________________________
c. ________________________________________________________

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NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.6.1 Basic operations within 100 000

Learning Standard 1.6.1 Solve addition number sentences involving up to four
numbers with the sum within 100 000.

Activity 1:

a. Show base blocks and pupils state the amount.
b. Show a few other base blocks and add to earlier base blocks.
c. Pupils state the total amount.
d. Pupils calculate in standard written method.

Activity 2:

a. Show other strategy to solve addition operation above.

1118 + 2 1120
+ 1215 – 2 + 1123

2333 2333

b. Use other method to solve the operation below.

1 1 22

34 567
9 865
+ 12 098

56 530

c. Repeat the activity using other questions involving addition up to four numbers.

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NUMBERS AND OPERATIONS: YEAR 4

Activity 3:
a. Form groups. Representative from each group will take a question card.

b. Pupils discuss in group. The first group which completes the task correctly is the
winner.

1 369 + 3 123 5 119 + 2 424
3 279 + 4 515 7 438 + 1 336

Activity 4:
a. Distribute Worksheet 1 and 2.
b. Discuss answers.

Assessment:

Pupils are able to answer all questions in Worksheet 1 and 2 correctly before moving on
to next leaning standard.

Attitude and Values:
Cooperation.

40

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

A. Add and write the correct answer.

= =

3 459 7 144

+ +

4 216

+ +

2 335 6 327

= =

B. Solve problems. Method 2 3. Method 1 Method 2
Example: Method 2
Method 1 1 149
+ 2 114
2 439 +1 2 440
+ 3 123 ‒1 + 3 122

5 562 5 562

1. Method 1 Method 2 4. Method 1

4 332 3 558
+ 1 439 + 4 225

2. Method 1 Method 2 5. Method 1 Method 2

2 216 41 68 978
+ 5 528 + 10 332

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class: ____________

Answer all the questions. 1. 20 830 + 17 260 = _________
Example :

10 200 + 12 900 = _________

10 200 + 800 11 000
+ 12 900 ‒ 200 + 12 100

23 100

2. 14 760 + 40 840 = _________ 3. 22 390 + 16 610 = _________

4. 35 821 + 23 142 = _________ 5. 46 063 + 31 825 = _________

6. 52 746 + 25 207 = _________ 7. 63 343 + 22 925 = _________

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NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.6 Basic operations within 100 000.

Learning Standard 1.6.3 Solve subtraction number sentences involving two
numbers from any one number within 100 000.

Activity 1:
a. Show abacus and guide pupils to state the value.

T.th Th H T O

b. Remove 1 122 beads.
c. Pupils build the number sentence.

Example:

54 589 – 1 122 = 53 467

Activity 2:
a. Guide pupils to subtract two numbers using standard written method.

Example :

21 192 – 7 895 =

43

Ten Th NUMBERS AND OPERATIONS: YEAR 4

Th HTO

b. Repeat activity with other questions.

Activity 3:
a. Show numbers pair of 10 cards.

b. Pupils say the number pairs vertically.
c. Explain that number pairs will add up to a total of 10.

Example:

T Th H T o Refer number
pair of 10 cards
Th to find their
number pairs

Start from place value ones

d. If number in the first line is smaller than number in the second line, that number can’t
be subtracted.

e. Look at the second line and find number pair based on number pair of 10 cards and
the partner is written at the right side of the number.

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NUMBERS AND OPERATIONS: YEAR 4
f. Number 2 in the first column will be added with the second line pair. The answers are

written in the space provided.
T Th H T o

Th

Add

Example:
g. The value of tens in the first line which is 1 is subtracted from 9.

T Th H T o

Th

h. Repeat steps c to g for place value of tens, hundreds, thousands and ten thousands.
i. Introduce the extended notation method by displaying this question.

Example:
j. Partition the numbers that need to be subtracted.

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NUMBERS AND OPERATIONS: YEAR 4
i. Subtract 7 000 from 27 192.

T TH H T o

TH

ii. Then, subtract 800 from the answer.
T TH H T o

TH

iii. Subtract 90 from 19 392.
T TH H T o

TH

iv. Then, 5 is subtracted from the answer, 19 302.
T TH H T o

TH

Activity 4:
a. Distribute Worksheet 1, 2 and 3 to pupils.
b. Discuss answers.

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NUMBERS AND OPERATIONS: YEAR 4
Activity 5:
a. Pupils look at picture shown and answer question.

b. Discuss with pupils operation involved.
c. Pupils create a story based on their observation.
Activity 6:
a. Show a basket of 190 marbles.
b. Take out 50 marbles from the basket.
c. Guide pupils to write a number sentence.
d. Take out 120 more marbles from the basket.
e. Guide pupils to write number sentence.
f. Show number sentence of repeated subtraction.

Activity 7:
a. Guide pupils to change number sentence to standard written method in the boxes

provided.
Example:

Ten Th Th H T O

b. Guide pupils to solve subtraction in standard written method without regrouping.

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NUMBERS AND OPERATIONS: YEAR 4

Example: Ten Th Th H T o

Ten Th Th H T o

c. Distribute questions involving subtraction in groups.
d. Pupils in groups solve the subtraction operation by regrouping.
e. Discuss answers.

Example:

Ten Th Th H T o Ten Th Th H T o

i. Guide pupils to solve the subtraction operation in standard written method.
ii. Repeat the activity with other questions.

Activity 8:
a. Distribute Worksheet 4 to the pupils.
b. Discuss answers.

Assesment:
Pupils are able to answer all question in Worksheet 1, 2, 3 and 4 correctly before moving
on to next learning standard.

Value and Attitude:
Cooperation.

48

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Solve. 2. 37 488 – 8 358 =
1. 56 372 – 4 158 =

3. 78 266 – 5 433 = 4. 59 632 – 24 381 =

5. 72 887 – 7 365 = 6 42 870 – 4 650

7. 29 054 – 5640 = 8. 72 864 – 1 249 =

9. 23 458 – 6 432 = 10. 82 736 – 1 584=

49

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class: ____________

Solve.

1. 2. 5 9 5 2 7
– 8 016
– 576
99 058 1 11

3. 5 0 5 2 7 4. 7 4 4 4
– – 13 11

8 018 12 1

5. 8 8 9 7 6. 9 0 9
– 13 0 – 25 88

5 295 5 121

7. 8 3 3 3 8. 6 2 8 5
– 52 52 – 19 8
7 696
03 1
50

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 3
Class: ____________

Answer all the question below. g
b
a

e
cd

fh

i

1. Vertically
a 34 216 – 7 109 =
b 56 013 – 14 327 =
d 47 956 – 38 694 =
g 24 934 – 6 908 =
h 63 495 – 29 346 =

2. Horizontally
a 31 705 – 4 607 =
c 96 834 – 16 775 =
e 72 881 – 31 045 =
f 80 075 – 19 643 =
i 100 000 – 12 757 =

51

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 4
Solve. Class: ____________
1. 12 678 – 10 015 – 1 550 =

2. 25 023 – 14 012 – 1 000 =
3. 33 152 – 22 040 – 10 000 =
4. 41 096 – 20 085 – 10 101 =
5. 54 652 – 23 540 – 20 102 =

52

NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.6 Basic operations within 100 000

Learning Standard 1.6.4 Solve multiplication number sentences involving any
number up to five digits by up to two-digit numbers, 100
and 1000 with the product up to 100 000.

Activity 1:

a. Show how to multiply in standard written method.
(Multiply number based on place values starting from ones, tens, hundreds and
thousands)

Example: 1 243 × 3 =

Activity 2:
a. Form a group of four and distribute number and multiplication symbol cards.

b. Show multiplication number sentence.
Example: 2 315 × 6

c. Pupils arrange number cards based on number sentence in standard written method.
d. Pupils solve multiplication question in standard written method.
Activity 3:
a. Pupils construct four multiplication questions (4-digits and 1-digit) using previous

number cards.
Example: 2 315 × 6

1 256 × 3 etc.
b. Pupils find answer using standard written method.
c. Pupils arrange answer in ascending order.
d. Discuss and check answer.

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NUMBERS AND OPERATIONS: YEAR 4

Activity 4:
a. Distribute Worksheet 1.
b. Pupils solve exercises in worksheet.
Activity 5:
a. Display multiplication question as follows:

7 321 x 4
b. Pupils answer in standard written method and lattice method.

1

7321
×4

2 9 2 84

c. Repeat activity with other examples.

Activity 6:
a. Show examples as below:

56 × 37 =_____ 234 × 22 =_____
843 × 14 =_____ 305 × 11 =_____
b. Guide pupils to answer questions in standard written method.
Example:

Activity 7:

a. Introduce pupils to factoring method to find answer.
Example:

843 × 14
= ( 843 × 10 ) + ( 843 × 4 )
= 8 430 + 3 372
= 11 802

b. Repeat activity with other examples.

c. Discuss answers.

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NUMBERS AND OPERATIONS: YEAR 4

Activity 8:
a. Distribute Worksheet 2.
b. Pupils solve exercises in worksheet.
Activity 9:
a. Guide pupils to compare value of 1, 10, 100 dan 1000.

1 One

Ten has one zero next to

number 1. 10

One hundred has two zeros

next to number 1 100

One thousand has three
zeros next to number 1 1000

Angka
Activity 1s0a:tu.

a. Show question below :

392  100 =
78  1000 =

b. Guide pupils to answer question based on steps given.

392  100 = ______
 392  1 = 392
 Add two zeros next to the product.
 So, 392  100 = 39 200

78  1000 = ______
 78  1 = 78
 Add three zeros next to the product.
 So, 78  1000 = 78 000

Examples :

a. 25  100 = ______
b. 512  100 = ______
c. 67  1000 = ______
d. 84  1000 = ______
e. 15  1000 = ______

c. Discuss answers.

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NUMBERS AND OPERATIONS: YEAR 4

Activity 11:
a. Divide pupils into 5 groups. Each group is given one box that contains 10 questions.

a. 238  ______ = 23 800
b. 11  ______ = 11 000
c. 69  ______ = 69 000
d. _____  100 = 46 800
e. _____  1000 = 75 000

b. Pupils answer questions in box. Then exchange the boxes with another group until all
questions are solved.

c. Discuss answers.

Activity 12:
a. Distribute Worksheet 3.

b. Pupils complete exercises in worksheet.

Activity 13:
a. Show simple multiplication flash cards.

98 70  10 1000  5

b. Pupils answer questions.

Activity 14:
a. Show two numbers multiplication.

36  52 =

Strategy 1: Example

Step 1 Step 2 Step 3

36 36 1800
2  50 + 72

72 1800 1872

36
 52

72
+1 8 0 0

1872

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NUMBERS AND OPERATIONS: YEAR 4

b. Teacher shows other method of solving multiplication:
Strategy 2

c. Encourage pupils to use any method or strategy to solve multiplication question.
Activity 15:
a. Ask pupils multiplication questions. Pupils have 2 minutes to answer questions in

pairs.
b. Explain how to solve questions on white board.
c. Pupils check their answers.
Activity 16:
a. Distribute Worksheet 4.
b. Discuss answers.
Assessment :
Pupils are able to answer questions in the Worksheet 1 and 2 correctly, before moving
on to next learning standard.
Attitudes and Values :
Cooperation.

57

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Answer all questions.

Example : 525  7 =

525 2. 724  6 =
7

3675

1. 333  5 =

3. 512  5 = 4. 589  8 =

5. 2137  3 = 6. 1254  7 =

7. 4050  4 = 8. 1570  8 =

9. 2156  4 = 10. 1005  6 =

11. 1243  7 = 12. 2309  9 =

58

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class : ____________

Solve in standard written method.

Example : 31  47 =

31
 47

217
+1 2 4 0

1457

1. 49  21 = 2. 58  18 =

3. 84  35 = 4. 183  15 =

5. 674  82 = 6. 577  45 =

7. 431  19 = 8. 583  38 =

9. 624  15 = 10. 106  26 =

59

NUMBERS AND OPERATIONS: YEAR 4

Name : _____________________________________ Worksheet 3
Class : ____________

Answer all questions.

1. 83  100 =

2. 66  100 =

3. 471  100 =

4. 550  100 =

5. 917  100 =

6. 12  1000 =

7. 49  1000 =

8. 76  1000 =

9. 94  1000 =

10. 100  1000 =

60

NUMBERS AND OPERATIONS: YEAR 4

Name : _____________________________________ Worksheet 4
Class : ____________

Answer all questions.

1. 2 5 4 2. 3 9 2 3. 6 3 7
6 4 7

4. 6 7 5. 9 2 6. 5 8
 24  36  19

7. 8 2 7 2. 4 5 2 3. 9 0 7
 13  35  63

61

NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.6 Basic operations within 100 000.

Learning Standard 1.6.5 Solve division number sentences involving any number
within 100 000 by up to two-digit numbers, 100 and
1 000.

Activity1:
a. Prepare two containers and some marbles.

b. Put one marble each into containers A and B. Repeat the same step until all marbles
are used up.

c. The amount of marbles will be the same in both containers.
Activity 2:
a. Divide numbers by one-digit using the Multipurpose Multiplication Table.

Example:
34 250 ÷ 5 =

Multipurpose Multiplication Table

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NUMBERS AND OPERATIONS: YEAR 4

Standard written method:

a. Divide numbers by a two-digit number.

Example: 86 346 ÷ 27 =

Construct multiplication table using Napier’s Bones method.

Multiplication 27 2 7 =27

2 7 27
4 14 54
6 21 81
8 28 108
10 35 135
12 42 162
14 49 189
16 56 216
18 63 243

Solve using standard written method based on multiplication table.

f. Divide numbers by 100
Example: 74 938 ÷ 100 =

63

NUMBERS AND OPERATIONS: YEAR 4

There are two or more methods that can be used in division which are:
i. Standard written method.
ii. Fraction.

Standard Written Method:

remainder

g. Divide numbers by 1000.
Example: 98 652 ÷ 1000 =

Answer = 98 remainder 652.
Activity 3:

a. Organize a group quiz (Smart Math Stations). Refer Attachment 1.

b. Each group will go from station to station simultaneously when whistle is blown.
c. The winner is determined by the highest marks.

Activity 4:
a. Pupils are given 15 minutes to answer Worksheet 1.

b. Discuss answers.

Assessment:

Pupils should be able to answer all questions in Worksheet 1 before moving on to the
next learning standard.

Attitude and values:
Cooperation, confident and diligent.

64

NUMBERS AND OPERATIONS: YEAR 4

Appendix 1

MATH QUIZ

STATION 1

STATION 2
STATION 3
STATION 4
STATION 5

65

NUMBERS AND OPERATIONS: YEAR 4

ANSWER CARD

IBNU SINA GROUP
ANSWER:

STATION 1: MARKS:
STATION 2:
STATION 3: OMAR KHAYYAM GROUP
STATION 4: ANSWER:
STATION 5:
MARKS:
STATION 1:
STATION 2: AL-KHAWARIZMI GROUP MARKS:
STATION 3: ANSWER:
STATION 4:
STATION 5: AL-BIRUNI GROUP
ANSWER:
STATION 1:
STATION 2: MARKS:
STATION 3:
STATION 4: AL-BATTANI GROUP
STATION 5: ANSWER:

STATION 1: MARKS:
STATION 2:
STATION 3:
STATION 4:
STATION 5:

STATION 1:
STATION 2:
STATION 3:
STATION 4:
STATION 5:

66

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Answer all questions.

1. 26 560  5 = 2. 43 794  9 =

3. 66 438  18 = 4. 83 902  35 =

5. 39 204  100 = 6. 92 586  1000 =

67

NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.7 Mixed operations.

Learning Standard 1.7.1 Solve mixed operations number sentences involving
addition and subtraction within 100 000.

Activity 1:
a. Prepare a box with 12 erasers.

b. Ask one pupil to put another 8 erasers into the box.

c. Ask another pupil to take out 13 erasers from that box.

Activity 2:
a. Ask pupils to calculate in standard written method. 12 + 8 – 13 =

Example:

12
+8

20

1 2 ¹0 Count from left to right.
- 13

7

Activity 3:
a. Ask pupils to state other method to get answer for question below.
51 + 49 – 24 =

Example:

51 27
─ 24 + 49

27 76

b. Ask pupils to show different method to do calculation.

Example:

51 100
+ 49 - 24

100 76

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NUMBERS AND OPERATIONS: YEAR 4
Activity 4:
a. Pupils do enrichment exercises.

Examples:
1) 56 + 30 – 26 =
2) 45 + 39 – 38 =
3) 63 + 35 – 32 =
4) 38 + 46 – 35 =
b. Distribute Worksheets 1 and Worksheet 2 involving mixed operations.
c. Discuss answers.
Assessment:
Pupils are able to solve mixed operations correctly.
Attitude and Values:
Write the number in correct place value before calculating.

69

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Solve.

1) 28 + 72 – 28 =

2) 25 + 87 – 60 =

3) 52 – 45 + 28 =

4) 525 – 63 + 15 =

5) 74 + 20 – 68 =

6) 291 – 36 + 55 =

7) 893 – 314 + 164 =

8) 396 + 210 – 118 =

9) 456 + 137 – 280 =

10) 672 – 464 + 339 =

70

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class: ____________

Solve.

1) 7 104 + 1 056 – 2 994 =

2) + 3 147 – 1 197 = 5 600

3) 7 154 – + 2 187 = 6 035

4) 9 113 – 2 592 + = 5 789

5) 4 156 + 3 103 – = 4 058

6) 5 214 – + 4 356 = 8 970

7) – 5 967 + 3 895 = 7 000

8) 6 425 + – 1 743 = 4 982

9) 3 165 + 2 897 – 4 200 =

10) 5 975 – 3 789 + 2 786 =

71

NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.7 Mixed operations

Learning Standard 1.7.2 Solve mixed operations number sentences involving
multiplication and division within 100 000.

Activity 1:
a. Pupils answer question spontaneously.
5  12 ÷ 6 =

Activity 2:
b. Pupils multiply using lattice method and divide in standard written method.
23  4 ÷ 4 =
24
01
04
82

92

92

13
4 92

-8
12
-12

Activity 3:
a. Group activity.
b. Prepare mixed operations question cards.
c. Distribute question cards to each group.
d. Ask each group to answer question cards.

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NUMBERS AND OPERATIONS: YEAR 4
Activity 4:
a. Distribute Worksheet 1 and 2.
b. Discuss answers.
Assessment:
Pupils should be able to answer questions in group activity and Worksheet 1.
Attitude and values
Cooperation

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NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Solve.

1. 15  6 ÷ 3 = 2. 69 ÷ 3  4 =

3. 82 ÷ 2  10 = 4. 27  6 ÷ 2 =

5. 32  6 ÷ 4 = 6. 12  600 ÷ 10 =

7. 100  6 ÷ 30 = 8. 6  5 000 ÷ 10 =

9.  3 000 ÷ 30 = 1 000 10. 4 500 ÷ 100  = 495

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NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class: ____________

Solve.

1) 28 ÷ 4 × 28 =

2) 56 × 28 ÷ 4 =

3) 100 ÷ 25 × 50 =

4) 47 × 15 ÷ 5 =

5) 68 ÷ 4 × 300 =

6) 71 × 33 ÷ 3 =

7) 88 ÷ 11 × 250 =

8) 89 × 42 ÷ 6 =

9) 93 ÷ 3 × 45 =

10) 99 × 100 ÷ 10 =

75

NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.8 Usage of unknown

Learning Standard 1.8.1 Determine the value of unknown in addition number
sentences involving two numbers up to two digits with
one unknown.

Activity 1:
a. Create a situation as below.

There are 45 marbles in a jar. 15 of them are blue marbles and the rest are white
marbles. How many white marbles are in the jar?

b. Ask pupils to understand the situation.

c. Discuss the situation given. Ask pupils to form a number sentence for the question.

15 + = 45

d. Explain to pupils that the unknown is the white marbles represented by .

e. Show how to find unknown values using subtraction.

15 + = 45

45
–15

30

f. Unknown can also be represented by alphabets or objects.

Example : 15 + y = 45

15 + = 45

Activity 2:
a. Form groups of three.
b. Each group is given the number card and addition card.

Number cards

Combination of numbers Sum
45
33 9 56 64
25
12 16 21 77

14 50 45

20 26 27

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NUMBERS AND OPERATIONS: YEAR 4

Addition Card
+=

c. Ask pupils to cut numbers in their group.

d. Pupils have to place two number cards in addition card as below.

Example:

33 + = 45

e. Ask pupils to show number sentence constructed and ask another group to solve
it.

f. Repeat activities until all groups manage to solve number sentences.

Activity 3:
a. Pupils solve enrichment exercises using standard written method.
Example:

1) 56 + = 89

2) + 34 = 57

3) + 16 = 42

4) 26 + = 60

Activity 4:
a. Distribute Worksheet 1 and 2 to pupils.
b. Discuss answers.

Assessment :
Pupils should be able to answer questions in the Worksheet before moving on to next
learning standard.
Attitude and Values :
Collaborate and listen to instructions.

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NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Solve.

1) 36 + = 70

2) + 60 = 69

3) + 28 = 55

4) 55 + = 84

5) 4 + = 39

6) 21 + = 62

7) + 14 = 36

8) + 18 = 28

9) 5 + = 16

10) 28 + = 47

78

NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class: ____________

Answer all questions.

1. 48 + a = 69 2. i + 32= 85
Find value a. Find value i.

3. 26 + d = 54 4. 14 + a = 73
Find value d. Find value a.

5. 9 + y = 44 6. b + 10 = 31
Find value y. Find value b.

7. h + 42 = 74 8. 56 + s = 93
Find value h. Find value s.

79

NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.8 Usage of unknown

Learning Standard 1.8.2 Determine the value of unknown in subtraction number
sentences involving two numbers up to two digits with
one unknown.

Activity 1:
a. Create a situation as below.

There are 19 mangoes in a basket. Some mangoes are rotten. Another 11 mangoes are
not rotten.

b. Ask pupils to understand question.

c. Discuss situation given. Ask pupils to form a number sentence for question.

19 – = 11

d. Explain to pupils that the unknown is the rotten mangoes represented by .

e. Show how to find unknown values using: 8
i. Count back

1 2 3 4 567

19, 18, 17, 16, 15, 14, 13, 12, 11
19 – 8 = 11

ii. Find difference of two numbers.
19

–11
8

.
f. The value of unknown can also be represented using various alphabets.

Example :

19 – x = 11

19 – a = 11

Activity 2:

a. Form a group of three.

b. Each group will be given an envelope containing six two-digit number cards and 3
different alphabet cards

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NUMBERS AND OPERATIONS: YEAR 4

21 43 16 56 33 18 x y z

c. Ask pupils to arrange cards to form three number sentence as below.
Example:

33 – y = 21

x – 56 = 16

43 – z = 18
d. Ask pupils to solve number sentences.
e. Discuss answers.

Activity 3:
a. Pupils solve enrichment exercises using standard written method.

Example:

1) 56 - = 34

2) - 14 = 57

3) - 22 = 42

4) 71 - = 50

Activity 4:
a. Distribute Worksheet 1 to pupils.
b. Discuss answers.

Assessment:
Pupils should be able to answer questions in the Worksheet 1 before moving on to next
learning standard.

Attitude and Values :
Collaborate, teamwork and courage.

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NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Answer all questions.

1. 70 – a = 54 1. i – 32= 12
Find value a. Find value i.

3. 96 – d = 54 4. 14 – a = 9
Find value d. Find value a.

5. 79 – y = 44 6. b – 10 = 31
Find value y. Find value b.

7. h – 42 = 23 8. 66 – s = 48
Find value h. Find value s.

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NUMBERS AND OPERATIONS: YEAR 4

Topic Numbers and Operations 60 minutes
Content Standard 1.9 Problem solving

Learning Standard 1.9.1 Solve problems of whole numbers, mixed operations
involving addition and subtraction, and mixed
operations involving multiplication and division within
100 000 in daily situations.

Activity 1:
a. Pupils create story using number sentence given.

10 + 8 – 9 =

b. Discuss stories.

Activity 2:

a. Assign different questions to each group.

b. Pupils are given three minutes to complete task.

c. Discus the questions using Polya method.

i. Understand problem.
ii. Plan a solving strategy.
iii. Carry out strategy.
iv. Check answer.

Activity 3:

a. Distributes worksheet to pupils.

b. Based on questions given, ask pupils to follow these steps for problem solving:

i. Understand problem.
ii. Plan a solving strategy.
iii. Carry out strategy.
iv. Check answer.

Activity 4:
a. Display some daily situations that involves mixed operation.
b. Pupils discuss and solve questions in group.
c. Pupils present their answers.
d. Make a conclusion for this activity.

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NUMBERS AND OPERATIONS: YEAR 4
Activity 5:
a. Distribute Worksheet 1 and 2.
Assessment:
Based on pupils’ ability to complete worksheets given.
Attitude and Values:
Collaboration.

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NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 1
Class: ____________

Solve these questions.

1. A total of 1 460 bicycles were sold from 2 647 bicycles by a
company within a certain period of time. If the company buys
another 3 300 bicycles. How many bicycles are there in the
company?

2. Adli reared 5 000 cows and 7 200 goats. During the Hari Raya
Haji celebration, 10 700 animals were sold. How many
animals are left?

3. A factory produces 7 400 blue pens and 8 600 red pens. If
the factory sells 5 500 pens to a store, how many pens are
still in the factory?

4. Aida has RM50 000. She spent RM32 000 to buy a car. The
following month, Aida saved RM15 000. How much has Aida
saved?

5. A cement factory produces 7 000 bags of cement a day.
Within two days, the factory sold 8 540 bags of cement. How
many bags of cement are left in the factory?

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NUMBERS AND OPERATIONS: YEAR 4

Name: _____________________________________ Worksheet 2
Class: ____________

Solve these problems.

1. Airis has five fish ponds. Each pond is filled with 450 fish. A
few months later, the fish were sold equally to three
wholesalers. How many fish are bought by each
wholesaler?

2. Razi bought 6 candy packs. Each pack contains 84 candies.
He gave the candies to four of his friends. How many
candies did each of them receive?

3. There are 42 400 durians in 8 baskets. How many durians
are there in 5 baskets?

4. There are 80 000 marbles in a container. These marbles are
distributed equally in 10 jars. Musfirah gave three jars to
Aqilah. Calculate the number of marbles that Aqilah gets.

5. 152 schools participated in the National Scout Jamboree
camp. Each school sent 34 participants. All of the participants
were divided into four groups equally. Find the number of
participants in each group.

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