Acme Mathematics-3 151C. Thousand on the abacusWhat makes a thousand?TH H T O10 Ones = 1 TenTH H T OTH H T O10 Tens = 1 HundredTH H T OTH H T O10 Hundreds = 1 ThousandTH H T O1 Ten makes 10 Ones1 Hundred makes 10 Tens1 Hundred makes 100 Ones1 Thousand makes 10 Hundreds1 Thousand makes 100 Tens1 Thousand makes 1000 OnesD. Writing 4-digit numbers1. The largest 3 digit number is 999.2. The first and smallest 4-digit number is formed by adding 1 to 999. i.e 999 + 1 = 1,0003. 1000 is read as one thousand.4. 1000 written in place value chart is given below:Thousand Hundred Ten Ones1 0 0 0
152 Acme Mathematics-35. The largest 4-digit number is 9999.Example 1: Read the abacus and write the number name.(a)O2T6H3TH5(b)O0T4H2TH9(c)O1T8H0TH7(a) Five thousand three hundred and sixty-two(b) Nine thousand two hundred and forty.(c) Seven thousand and eighty-one.Classwork1. Match the following.13 hundreds15 hundreds20 hundreds10 hundreds18 hundreds14 hundreds20001300150018002100100021 hundreds 1400
Acme Mathematics-3 1532. Match the following base-10 block and their number.11631122115413251245125513341261
154 Acme Mathematics-3Exercise 5.21. Write the number.
Acme Mathematics-3 1552. Read the abacus and complete the boxes.+ 50 + 4 = 6154Thousand Hundred Tens Ones6000 + 100+ + =Thousand Hundred Tens Ones++ + =Thousand Hundred Tens Ones++ + =Thousand Hundred Tens Ones+
156 Acme Mathematics-33. Match the followings.(Thousand = Th, Hundred = H, Tens = T and Ones (O)3 Th + 2 H + 8 T + 1 O 64122 Th + 1 H + 4 T + 3 O 13751 Th + 3 H + 7 T + 5 O 55946 Th + 4 H + 1 T + 2 O 32815 Th + 5 H + 9 T + 4 O 21434 Th + 2 H + 5 T + 9 O 91687 Th + 4 H + 3 T + 7 O 42598 Th + 3 H + 2 T + 6 O 74379 Th + 1 H + 6 T + 8 O 83264. Read the abacus and write the numbers and number names:(a)TH H T O1235One thousand two hundred and thirty-five(b)TH H T O
Acme Mathematics-3 157(c)TH H T O(d)TH H T O(e)TH H T O5. Write the number name:5675 = Five thousand six hundred and seventy-five8042 =7563 =4801 =1270 =6400 =3500 =4580 =9021 =2899 =9531 =
158 Acme Mathematics-37202 =1131 =5400 =6573 =9375 =8230 =9928 =6. Write the missing numbers:(a) 3556 3557(b) 4112(c) 5585 5586(d) 6500 6501(e) 7399 7400(f) 8063(g) 9060(h) 1980 19837. Write the number for the following number name:TH H T O(a) Four thousand two hundred and fifty-two 4 2 5 2(b) Three thousand five hundred and sixty-one(c) Two thousand six hundred and three(d) One thousand three hundred and fifteen(e) Nine thousand eight hundred and six(f) Four thousand nine hundred and twenty
Acme Mathematics-3 159TH H T O(g) Six thousand and seven(h) Seven thousand eight hundred and four(i) Eight thousand eight hundred and eight(j) Three thousand four hundred and five8. Write in tens:1000 101020103030403050107010801090109. Write in hundreds:1000 140012001300140015001600170018001900200010. Write in thousands:(a) 1000 6000(b) 3000 15000(c) 4000 7000(d) 2000 10000
160 Acme Mathematics-311. Count on the number line:(a)1000 1001 1002(b)1500 1501 1502(c)3450 3451(d)9835 9836(e)4001 4002(f)8190 819212. Complete the number line:(a) Skip count in 2's:1480 1482 1484(b) Skip count in 3's:7481 7484 7487(c) Skip count in 5's:6350 6355(d) Skip count in 4's:8047 8051
Acme Mathematics-3 161E. Place value of the 4-digit numberPlace value and face valueLook at the following place value chart:Number Th H T O Th H T O Place1 1TH H T OOnes10 1 0TH H T OTens100 1 0 0TH H T OHundred1000 1 0 0 0TH H T OThousandIn the place value chart the numbers are written in four places.Thousand Hundred Tens OnesTh H T O8 3 5 7Here the number is 8357. It is read as eight thousand three hundred and fifty seven. The value of a digit depends on the place where it occurs. This is known as the place value. A digit in a number also has a face value.Look at the given example for place value and face value of the number.4 3 2 11 1 ones = 12 tens = 203 hundred = 3004 thousand = 4000234Th H T O Face value Place value
162 Acme Mathematics-3F. The expanded formA four-digit number consists of four place values. Thousands, hundreds, tens and ones. The number name of it indicates the digits in the respective place value of the number. Consider a four digit number 4321.Thousand Hundred Tens OnesTh H T O4 3 2 1The expanded form of the number is:4321 = 4 thousands + 3 hundreds + 2 tens + 1 ones= 4000 + 300 + 20 + 1G. Use of comma (,)We use comma(,) to read the larger number easily. Comma separates the periods (thousand, hundred, tens, ones, etc.). The first comma is after 3-digit from the right. Then every comma is put after 2 digits.Look at the following examples :256 5,256 51,256The digit in the same period are read together.256 → It has no comma. It is two hundred and fifty six.5,256 → 5 is separated by comma. It is five thousand two hundred and fifty six.51,256 → 51 is separated by comma. It is fifty one thousand two hundred and fifty six.Classwork1. Write the place of the encircled digits:(a) 2 1 5 0 5 is in tens place.(b) 5 2 6 3(c) 3 9 2 5(d) 4 5 2 3(e) 5 6 4 2(f) 3 9 1 5
Acme Mathematics-3 1632. Complete the abacus and find the place value in the following:(a)8 7 6 55PlaceValue607008000TH H T O(b)TH H T O6 5 4 3 PlaceValue(c)TH H T O9 3 8 6 PlaceValue(d)TH H T O9 0 3 5 PlaceValue3. Write the face value and place value of the encircled digits: Face value Place value(a) 1 4 3 1 1 1000(b) 2 6 4 5(c) 8 9 1 2(d) 6 0 3 6(e) 9 6 3 3Exercise 5.31. Write the expanded form for the following:(a) 5678 = 5000 + 600 + 70 + 8(b) 6345 = + + +(c) 7486 = + + +(d) 8356 = + + +
164 Acme Mathematics-32. Match the standard form of number to the expanded form of numbers.(a) 8000 + 200 + 90 + 5 9568(b) 1000 + 400 + 50 + 1 3142(c) 4000 + 800 + 10 + 5 8295(d) 3000 + 100 + 40 + 2 2517(e) 9000 + 500 + 60 + 8 6038(f) 7000 + 300 + 20 + 1 5243(g) 6000 + 800 + 80 + 4 6884(h) 5000 + 200 + 40 + 3 1451(i) 2000 + 500 + 10 + 7 4815(j) 6000 + 30 + 8 7321
Acme Mathematics-3 1653. Write in the short form for the following expanded form:(a) 1 thousand + 2 hundred + 3 tens + 4 ones = ........................(b) 5 thousand + 6 hundred + 0 tens + 7 ones = ........................(c) 7 thousand + 8 hundred + 7 tens + 1 ones = ........................(d) 2 thousand + 9 hundred + 4 tens + 1 ones = ........................(e) 8 thousand + 7 hundred + 6 tens + 5 ones = ........................(f) 5 thousand + 4 hundred + 3 tens + 3 ones = ........................(g) 6 thousand + 2 hundred + 0 tens + 7 ones = ........................(h) 9 thousand + 8 hundred + 7 tens + 6 ones = ........................(i) 3 thousand + 0 hundred + 4 tens + 5 ones = ........................4. Write the number using comma:Thousand Hundred Tens Ones Numbers8 3 5 7 ............................4 3 2 1 ............................5 6 7 8 ............................2 1 0 9 ............................5. Express in the place value chart and write in word:(a) 3,457 (b) 4,789 (c) 1,008 (d) 5,230 (e) 9,9996. Complete the following number pattern:7808 76086169 62691847 28475564 5665
166 Acme Mathematics-3H. Comparison of NumbersOrder relationHey Junu, let's put these numbers in order.Sure Tasi, would you like them in ascending or descending order?200300 100400600500 800900 7001000We can arrange numbers in two ways:Arranging numbers from the smallest to the largest is called ascending order. Arranging numbers from the largest to the smallest is called descending order.Rules for comparison of numbers1. The greater the number of digits, the greater is the number. 6989 > 4562. If two numbers have the same number of digits, the number with the largest digit on the left hand side is greater.84 32 > 57328 > 53. If the two left most digits are the same we compare the next digit to the right and continue the process.3679 >3 = 36 = 67 > 63669
Acme Mathematics-3 167Exercise 5.41. Fill in the blanks using = , > or < :(a) 1849 .......... 2639 (b) 6591 .......... 1734(c) 1086 .......... 2746 (d) 4356 .......... 4336(e) 5389 .......... 5389 (f) 9458 .......... 9450(g) 1991 .......... 1990 (h) 3451 .......... 7255(i) 8926 .......... 8726 (j) 2559 .......... 2559(k) 7128 .......... 6467 (l) 7130 .......... 9150(m) 1991 .......... 1991 (n) 4567 .......... 4569(o) 8792 .......... 8795 (p) 2356 .......... 13272. Circle the largest number:(a) 3631, 3681, 3623, 4163, 3861(b) 4243, 4603, 4432, 4132, 4453(c) 5391, 5931, 5319, 5139, 5991(d) 6659, 6682, 6631, 6148, 6361(e) 7393, 7935, 7345, 7135, 7981(f) 8379, 5432, 8830, 2191, 1325(g) 7544, 4566, 8692, 8140, 83903. Circle the smallest number:(a) 7602, 7360, 7210, 7860, 7860(b) 8761, 8167, 8671, 8467, 8117(c) 9389, 9938, 9831, 9878, 9778(d) 2386, 2863, 3638, 4363, 5673(e) 8279, 7197, 2681, 5403, 1119(f) 8379, 5432, 8830, 2191, 1325(g) 7544, 4566, 9875, 2365, 1254How do we compare numbers?
168 Acme Mathematics-3A. Ten thousand on the abacusTH H T O TH H T O T-TH TH H T O(a) (b)(a) 9 Thousands 9 Hundreds and ninety nine(b) 10 ThousandsB. Writing 5-digits numbers in the place value chart1. The largest 4 – digit number is 9999.2. The first and smallest 5 – digit number is formed by adding 1 to 9999,i.e. 9999 + 1 = 10000.3. 10000 is read as ten thousand.4. 10000 is written as shown below:Ten thousand Thousand Hundred Tens Ones1 0 0 0 05. The largest 5-digit number is 99999.C. Counting in ten thousandsT-TH TH H T O10000(Ten thousand)T-TH TH H T O20000(Twenty thousand)T-TH TH H T O30000(Thirty thousand)10 Thousands is 1 more than 9999.10000 is 5-digit number.5.3 5-digit Numbers
Acme Mathematics-3 169T-TH TH H T O40000(Fourty thousand)T-TH TH H T O50000(Fifty thousand)T-TH TH H T O60000(Sixty thousand)T-TH TH H T O70000(Seventy thousand)T-TH TH H T O80000(Eighty thousand)T-TH TH H T O90000(Ninety thousand)D. Number and number name(a)T-TH TH H T O45623(b)T-TH TH H T O62987(c)T-TH TH H T O95042(a) Forty-five thousand six hundred and twenty-three(b) Sixty-two thousand nine hundred and eighty-seven(c) Ninety-five thousand and forty-two.E. Place valueStudy the following place value charts.Ten thousand Thousand Hundred Tens Ones1 0 0 0 01 ten thousand = 1 × 10000 = 10000
170 Acme Mathematics-3Ten thousands Thousands Hundred Tens Ones6 5 0 0 06 Ten thousand 5 thousand = 6 × 10000 + 5 × 10000 = 60000 + 5000 = 65000Hence,6 Ten thousand and 7 thousand = 67 thousand = 67000Sixty seven thousand = 60000 + 7000 = 67000.Sixty seven thousand Look at the following place value chart:Thousand OnesTen thousand Thousand Hundred Tens Ones10000 1000 100 10 04 5 6 7 8Here, the number is 45678 where, place value of number are:T-Th Th H T U Place value 4 5 6 7 88 8 ones = 87 Tens = 706 Hundred = 6005 Thousand = 50004 Ten thousand = 400007654Classwork1. Read the abacus and write the number and number name:(a)T-TH TH H T O
Acme Mathematics-3 171(b)T-TH TH H T O(c)T-TH TH H T O(d)T-TH TH H T O2. Write the number name:56475 Fifty six thousand four hundred and seventy-five687477756387801917707540035000475803937157899
172 Acme Mathematics-3Exercise 5.51. Write the number for the following number names:(a) Fifty-four thousand two hundred and fifty-two. 54252(b) Seventy-three thousand five hundred and sixty.(c) Eighty-two thousand six hundred and three.(d) Ninety-one thousand three hundred and fifteen.(e) Twenty-nine thousand eight hundred and sixteen.(f) Sixty-four thousand and twenty-nine .(g) Twelve-thousand and seven.(h) Twenty-seven thousand eight hundred and four.2. Count on the number line:(a)10000 10001(b)21510 21520(c)43450 43500(d)98300 98600(e)14000 16000(f)20000 50000
Acme Mathematics-3 1733. Fill the number in the place value chart and write the number name:(a) 23564 (b) 98765 (c) 467785 (d) 75432(e) 12456 (f) 52146 (g) 65478 (h) 845674. Write the place of the encircled digits:(a) 2 1 5 0 5 5 is in hundred place.(b) 5 2 6 3 2(c) 3 9 2 5 4(d) 4 5 2 3 6(e) 5 6 4 2 8(f) 3 9 1 5 95. Write the place value of the encircled digits:(a) 5 6 3 5 4(c) 8 6 5 6 7 (e) 6 7 6 0 5(g) 6 2 9 5 7 (i) 7 6 3 2 6(b) 3 4 2 6 7(d) 5 3 2 4 7(f) 3 8 6 5 9(h) 8 7 5 2 9 (j) 2 5 1 9 36. Complete the following as shown in the example:2 ten thousands and 3 thousand = ............... ....................................... 3 ten thousands and 1 thousand = ............... ....................................... 4 ten thousands and 5 thousand = ............... ....................................... 8 ten thousands and 6 thousand = ............... ....................................... 9 ten thousands and 7 thousand = ............... ....................................... 7. Complete the following as shown in the example:90000 + 2000 = .............. .....................................................80000 + 7000 = .............. .....................................................10000 + 3000 = .............. .....................................................23000 Twenty three thousand92000 Ninety two thousands
174 Acme Mathematics-340000 + 6000 = .............. .....................................................50000 + 5000 = .............. .....................................................8. Write the numbers in the blanks:1000 less Given number 1000 more87,51015,78946,82978,50386,51095,41226,5489. Write the numbers in the blanks:10000 less Given number 10000 more77,90824,56799,00020,99988,88865,87455,64739,547
Acme Mathematics-3 175F. The expanded formA five-digit number consists of five place values:Ten thousand Thousand Hundred Tens OnesIts number name indicates the digits in the respective place value. Consider a five-digit number 25648. This number can be written as:25648 = 20000 + 5000 + 600 + 40 + 8The above form is the expanded form of the number 25648.G. The standard formIf a number is given in an expanded form, it can be put in the standard form. Consider the following expanded form of a number.50000 + 6000 + 700 + 80 + 9Its standard form is 56789.H. Use of comma (,)We use comma (,) to read the larger number easily. Comma separates the periods (thousand, hundred, tens, etc.). The first comma is after 3-digits from the right. Then every comma is put after 2-digits.Look at the following examples:1,234 45,678 4,56,789The digit in the same period is read together.Look at the following example: 87,654It is 5-digit number. 87 is separated by comma.It is read as eighty seven thousand six hundred and fifty-four.Classwork1. Write the expanded form for the following numbers:(a) 24567 = ............ + ............ + ............ + ............ + ............(b) 84967 = ............ + ............ + ............ + ............ + ............ (c) 74560 = ............ + ............ + ............ + ............ + ............
176 Acme Mathematics-3(d) 64362 = ............ + ............ + ............ + ............ + ............(e) 54066 = ............ + ............ + ............ + ............ + ............ (f) 94160 = ............ + ............ + ............ + ............ + ............ (g) 41585 = ............ + ............ + ............ + ............ + ............Exercise 5.61. Write in the standard form:(a) 50000 + 5000 + 400 + 50 + 9 =(b) 60000 + 7000 + 800 + 80 + 1 =(c) 70000 + 8000 + 900 + 20 + 3 =(d) 80000 + 9000 + 400 + 50 + 6 =(e) 90000 + 8000 + 700 + 60 + 5 =2. Write in the standard form:(a) 1 Ten thousand + 2 thousand + 3 hundred + 4 tens + 5 ones(b) 2 Ten thousand + 5 thousand + 6 hundred + 8 tens + 9 ones(c) 9 Ten thousand + 9 hundred + 9 tens + 0 ones3. Write the number using comma:Ten-thousand Thousand Hundred Tens Ones8 1 3 5 7 .......................7 4 0 2 1 .......................3 6 6 7 8 .......................1 2 1 0 9 .......................9 0 5 7 6 .......................4. Express in the place value chart and write in word:(a) 3,457 (b) 9,789 (c) 18,008 (d) 87,230(e) 89,007 (f) 10,900 (g) 29,000 (h) 33,227
Acme Mathematics-3 177Project Work1. Objective: To identify the numbers2. Materials required: Colours3. Activity: Study the numbers given below.4243 2345 7318 40567 100002150 73603 65000 29 888888 98735 84032 97654 4690000 2091 999 5100 98319999 7300 90099 1345 235Find these numbers in the above chart and colour them(a) RedSeven lakh eighty four thousand and thirty-two.Four thousand two hundred and forty-three.Ninety thousand 70000 + 3000 + 600 + 38000 + 800 + 80 + 8 The number 1 more than 234.Fifty one hundred Seven thousand three hundred.(b) Green5 in tens place. 4 in ones place.7 in hundred place. 4 in ten thousand place.(c) BlueThe smallest number formed by the digits 2, 3, 5, 4.The greatest number formed by the digits 1, 8, 3, 9.The largest 4-digit number. The smallest 5-digit number.6 ten thousand and 5 thousand. The place of 9 is ten thousand(d) YellowThe number between 2090 and 2092.The number in Devanagari is !#$%.gf} ;o pgfG;o Even numbers less than 100.The number round off to 7300 (Nearest hundred).
178 Acme Mathematics-3A. Local Number systemStudy the number system given below. Disscus about it in the class.Try to solve the following questions: Name the number system in your community and write the number one to ten in local system. Discus in the class with your friends and collect different number systems in your locality, if possible. Name the number system and complete the table given below.Number system Number as symbolDevanagariRoman............................................................................................................5.4 Local NumbersSource: National Archives
Acme Mathematics-3 179B. Devanagari Number systemActivity!= hf]8f ldnfpg'xf];\\ M!^ twenty nine 70&) sixteen 83!)) eighty three 57@( seventy 16^! fifty seven 29*# hundred 61%& sixty one 100@= tn cIf/df lbOPsf ;+ª\\Vofx¿nfO{ lxGb'–c/]las cª\\s / cIf/df n]Vg'xf];\\Mb'O{;o PsfpGg 251 two hundred and fifty onerf/;o rfln;tLg;o kfFr;ft;o k};7\\7LkfFr;o gAa]Ps;o aL;gf};o krf;Lb'O{;o aofgAa]cf7;o pgfG;o;ft;o pgfG;f7L
180 Acme Mathematics-3) !@ #$ %^ &* (!)xfd|f] cª\\sx¿xfd|f] g]kfn /fd|f] g]kfnOur numbers ), !, @, #, $, %, ^, &, *, ( are called Devanagari numbers. The system is similar to Hindu-Arabic Number system.A. !)) b]lv dflysf ;ª\\Vofx¿ k9\\g'xf];\\ / l;Sg'xf];\\ .!)! – Ps ;o Ps 101 – One hundred and one!)% – Ps ;o kfFr 105 – One hundred and five!$) – Ps ;o rfln; 140 – One hundred and forty@)) – b'O{ ;o 200 – Two hundred %)) – kfFr ;o 500 – Five hundred!,))) – Ps xhf/ 1,000 – One thousand!),))) – bz xhf/ 10,000 – Ten thousandB. :yfg dfg tflnsf-s_ @#$% nfO{ :yfg dfg tflnsfdf b]vfpg'xf];\\ .pQ/ M xhf/ ;o bz Ps@ # $ %cIf/df n]Vbf M b'O{ xhf/ tLg ;o k}tfnL; .-v_ $)#(! nfO{ cIf/df n]Vg'xf];\\ MpQ/ M $)#(! → rfln; xhf/ tLg ;o PsfgAa] .
Acme Mathematics-3 181-u_ krf; xhf/ rf/ ;o lqkGgnfO{ cª\\sdf n]Vg'xf];\\ .pQ/ M %),$%#-3_ cª\\s / cIf/df n]Vg'xf];\\ .bz xhf/ xhf/ ;o bz Ps* & ^ % )pQ/ M cª\\sdf n]Vbf M *&, ^%) cIf/df n]Vbf M ;tfl; xhf/ 5 ;o krf; .Classwork!= hf]8f ldnfpg'xf];\\M!(! 5;o afx|@)) cf7;o tL;@)% gf};o pgfG;o^!@ Ps;o PsfgAa]&@% gf} ;o rf}jfln;*#) b'O{;o kfFr($$ b'O{;o((( ;ft;o klRr;@= tn lbOPsf] tflnsf k\"/f ug'{xf];\\ Mtwo hundred and thirty five b'O{;o k}lt; @#%one hundred and seventy seven
182 Acme Mathematics-3five hundred and fifty threeseven hundred eighty twofour hundred and twenty onenine hundred and thirty ninethree hundred sixty threesix hundred and twentyeight hundred and thirty fourExercise 5.51. Write Devanagari numbers for:(a) 218 = ............ (b) 182 = ............ (c) 824 = ............(d) 728 = ............ (e) 743 = ............ (f) 594 = ............(g) 1234 = ............ (h) 7082 = ............ (i) 9876 = ............2. Write the number name for the following Devangari numbers:(a) !@* = Ps ;o c¶fO; (b) @!) = ..........................(c) #!& = .......................... (d) %)$ = ..........................(e) ^^) = .......................... (f) ^&* = ..........................(g) ((( = .......................... (h) !))) = ..........................(i) !%)) = .......................... (j) @))) = ..........................3. Put in the place value chart and write the number name:(a) @,#$% (b) ^,))$ (c) &,!@#(d) (,)!@ (e) (,((( (f) !),)))4. Write the place value of the circled digits:(a) @ # $ ^ .................... (b) ^ & * ( ....................(c) $ % ^ $ ! .................... (d) ( * & ^ % ....................
Acme Mathematics-3 1835. Match the following:&$%# 80050!@#$ 89765*))%) 65432*(&^% 1234^%$#@ 90000&#)@$ 7453()))) 73024A BC. Roman NumberStudy the following clocks: Read the time on the clock. What time is it now? Are the numbers on both the clocks same?In ancient days Roman had a different system of numbers. They used different symbols to write numbers. Each symbol has different value. The table given below shows the Roman symbols (Numbers) and their value.RomanNumbers I II III IV V VI VII VIII IX X XI XIIValue 1 2 3 4 5 6 7 8 9 10 11 12Telling time is interesting!
184 Acme Mathematics-3Romans had no number for Zero.We still use Roman numbers. Sometimes the units of a book and classrooms in a school are marked in Roman numbers.More Roman Number and their values:Roman Numbers Value Numeral in wordsXIII 13 ThirteenXIV 14 FourteenXV 15 FifteenXVI 16 SixteenXVII 17 SeventeenXVIII 18 EighteenXIX 19 NineteenXX 20 TwentyExercise 5.61. Match the following:258121520191813XXXIIIVXIXVIIIXVXVIIIIIXII
Acme Mathematics-3 1852. Write in Roman number:(a) Four (b) Six (c) Seven(d) Ten (e) Eleven (f) Three3. Write in words:(a) X Ten (b) XII (c) IX(d) V (e) VIII (f) IV(g) III (h) XI (i) VII4. Add the following and write the answer in Roman number:(a) 5 + 2 = VII (b) 5 + 5 = (c) 3 + 9 = (d) 5 + 1 = (e) 1 + 10 = (f) 2 + 6 = 1. Match the following.2001000110100Mixed Exercise
186 Acme Mathematics-32. Fill in the blanks.(a) 1 ten = ................ ones(b) 10 tens = .................. ones.(c) 100 tens = .............. hundreds.(d) 10 tens = ................. hundreds.3. Tick the correct one.(a) 9 is the largest one-digit number.(b) 100 is the largest two-digit numbers.(c) 999 is the largest three-digit numbers.(d) 1000 is the smallest four-digit numbers.4. Write in Devanagari.(a) 5620 =(b) 90000 = 5. Count the blocks and write the number.= .....................6. Read the abacus and write the number.TH H T O ...............................
Acme Mathematics-3 1877. Complete the abacus: 6500TH H T O8. Write the number name.(a) 4780 = ..........................(b) 94009 = ..........................9. Write in number.(a) Six thousand four hundred and twenty.(b) Thirty thousand, six hundred and forty-five.10. Study the place value chart and complete the following.Thousands UnitsTens Ones Hundred Tens Ones5 4 3 2 1In word : .................................................................................................Place of digits Place value of digit531........................................................................11. Complete the number line:500 70012. Complete the table.10 12 14105 115 125
188 Acme Mathematics-3BASIC OPERATIONS THEME66.1 Revision 6.2 Addition of 3-digit number 6.3 Subtraction of 3-digit number 6.4 Relation between addition and Subtraction 6.5 Multiplication - Multiplication table (1-10) - Multiplication as repeated addition - Multiplying 3-digit number by 1-digit number - Multiplying by 10, 20, 30, ..........., 90. - Multiplying 3-digit number by 2-digit number- Word problem 6.6 Division. - division as repeated subtraction - dividing 2-digit number by 1-digit number- dividing 3-digit number by 1-digit number - division with remainder - division with regrouping - division by 10 - word problemWeightage: 39
Acme Mathematics-3 189Solve the problem and go your home.25+ 13– 12– 11 – 26– 27– 70– 12– 30+ 15+ 26+ 26+ 14+ 24– 30+ 14+ 24– 15 – 16– 35– 15+ 13+ 23+ 20 + 30– 2+ 20+ 146.1 RevisionActivity
190 Acme Mathematics-3Add or subtract and colour the object by answer code.25 → pink26 → orange27 → green28 → red29 → yellowAnswer Code14 + 11 = ...13 + 13 = ...20+5 = ...17 + 11 = ...29 – 4 = ...12+14 = ...14 + 14 = ...15 + 14 = ...12+13 = ...30 – 5 = ...100 – 73 = ...29 – 1 = ...11+15 = ...60 –35 = ... 14+12 = ...28 – 1 = ...29 – 2 = ... 13 + 14 = ...15 + 12 = ...11 + 16 = ...Activity-2
Acme Mathematics-3 191Add the number, colour as per answer code.142+ 123124+ 122157+ 120123+ 116260+ 38130+ 125120+ 11857+ 242173+ 112111+ 153 128+ 111116+ 142231 - 260 → green261 - 300 → redAnswer CodeActivity-3
192 Acme Mathematics-31. Add by counting forward:324 + 2324 325 326324 + 2 = 326225 + 5225225 + 5 = ................126 + 3126126 + 3 = .................451 + 6451451 + 6 = .................267 + 9267267 + 9 = .................388 + 8388388 + 8 = .................Can you add faster than me?I know how to count forward.Classwork
Acme Mathematics-3 1932. Match the following.20 + 12 500 + 90 + 9one hundred sixty-one 600200 – 100 32the sum of 150 and 20 220the difference, 228 – 8 100599 170six hundred 1613. Fill in the blanks.(a) 102 cows and 106 cows together are ................................... cows.(b) 205 fingers and 100 fingers together are ........................... fingers.(c) 110 + 120 = ................. (d) 91 + 61 + 18 = ..............(e) 281 + 300 = ................ (f) 46 tens and 3 ones = ..............(g) 38 tens and 8 ones = ..................(h) 390 + 17= ...............(i) 210 + 120 and 250 + 80 are .................Why didn't the two 4's like dinner?Because they already 8.
194 Acme Mathematics-3A. Addition of 3-digit Numbers (without carrying)Add: 234 and 163This picture shows you how to add hundreds, tens and ones.hundreds tens onesThis is 234hundreds tens onesThis is 163When you add then you get:3 hundreds 9 tens 7 ones = 397The short way to add is like this:2 3 4+ 1 6 32 hundreds 3 tens 4 ones+ 1 hundred 6 tens 3 ones3 hundreds 9 tens 7 onesStep 1 : Add the one. 4 + 3 = 7Write 7 in the ones column.Step 2 : Add the tens. 3 + 6 = 9Write 9 in the tens column.Step 3 : Add the hundreds. 2 + 1 = 3Write 3 in the hundreds column.Your answer is 397.2 3 4+ 1 6 33 9 7Keeping pictures would be better!Add the units first.Next, add the tens.Then, add the hundred.6.2 Addition of 3-digit numbers
Acme Mathematics-3 195Exercise 6.1Add these numbers:H T O4 6 3+ 2 2 2H T O3 2 5+ 1 4 4H T O6 4 1+ 2 3 8H T O5 6 7+ 4 3 1H T O4 6 3+ 2 2 2H T O2 8 6+ 5 1 3H T O4 8 2+ 2 0 3H T O3 5 2+ 1 2 6H T O5 9 6+ 2 0 2H T O4 5 3+ 4 4 5H T O5 2 2+ 4 4 7H T O6 5 3+ 2 3 4H T O6 6 5+ 3 0 4H T O4 6 5+ 5 2 4H T O8 3 6+ 1 6 3H T O5 5 5+ 3 3 3B. Addition of 3-digit numbers (with carrying)Step 1 : Add the ones. 6 + 5 = 11 onesWrite 1 in the ones column and carry 1 ten to the tens column.Step 2 : Add the tens. 3 + 8 = 11 tens (1 hundred and 1 ten)Add 1 ten which you carried over.11 + 1 = 12 tensWrite 2 in the tens column and carry 1 hundred to the hundreds columnStep 3 : Add hundreds. 4 + 2 = 6 hundredsAdd 1 hundred which you carried over. 6 + 1 = 7 hundredsWrite 7 in the hundreds column.H T O1 14 3 6+ 2 8 57 2 1H T O4 3 6+ 2 8 5Answer : 721Add :
196 Acme Mathematics-3Classwork1. Do the following:H T O3 7 6+ 4 9 5H T O4 8 4+ 4 7 8H T O6 7 6+ 2 9 6H T O5 5 3+ 3 5 7H T O3 7 6+ 2 4 5H T O4 8 7+ 2 9 3H T O1 8 4+ 7 9 6H T O6 4 6+ 2 8 5H T O7 6 7+ 1 9 4H T O5 8 9+ 2 2 3H T O6 4 8+ 1 8 2H T O4 6 8+ 5 7 4Exercise 6.21. Find the sum:H T O5 4 6+ 8 6H T O4 5 7+ 6 4H T O3 6 8+ 4 5 4H T O2 7 3+ 5 9H T O5 8 9+ 2 6 5H T O4 3 6+ 4 8 7H T O1 0 7+ 4 9 4H T O2 3 7+ 6 7 3H T O1 8 6+ 4 9 4H T O3 7 8+ 5 9 5H T O1 9 7+ 3 2 4H T O2 7 8+ 6 3 5
Acme Mathematics-3 1972. Add the following:8 3 85 7 6+ 2 3 92 4 35 2 7+ 8 7 84 5 39 4 5+ 4 2 22 3 93 2 9+ 4 2 91 4 45 1 3+ 1 3 53 7 31 9 9+ 1 7 52 5 01 5 7+ 4 0 85 0 31 8 8+ 2 9 31 9 94 4 8+ 2 3 92 8 95 3 1+ 1 4 23 8 61 4 7+ 2 6 84 2 32 4 8+ 1 5 93. Solve the following problems:There are 897 girls and 235 boys in a school. How many students are there in the school?8 9 7 girls+ 2 3 5 boysstudents are in the school.A fruit seller sold 778 boxes of apples on Monday and 466 boxes on Tuesday. How many total boxes of apples did he sell?There were 555 people in 10 buses and 795 people in another 14 buses. How many total people were there in these buses?Anil and Hari wanted to buy a gift for their mothers. Anil saved Rs. 674 and Hari saved Rs. 957. How much money did they save in all?There were 776 cows in the first village and 884 cows on the other village. How many cows were there in these two villages?
198 Acme Mathematics-3220 – 2222 – 4222 – 5222 – 3220 – 2221 – 4 221 – 2 220 – 1221 – 4221 – 2221 – 3221 – 3220 – 1220 – 3220 – 2223 – 4220 – 3Colour Code217 - Green218 - Red219 - blueSubtract and colour the balloons according to the given colour code.Activity6.3 Subtraction
Acme Mathematics-3 1991. Subtract by backward counting:330 – 2Count backwards from 330.330 – 2 = 328225 – 3Count backwards from 225.225 – 3 = ................166 – 5Count backwards from 166.166 – 5 = ................478 – 6Count backwards from 478.478 – 6 = ......582 – 4Count backwards from 582.582 – 4 = .................295 – 8Count backwards from 295.295 – 8 = .................295How many numbers?________________328 329 330225166478582Let us crawl backwards and subtract.Classwork
200 Acme Mathematics-3215 – 5215 215 – 5 = 210318 – 3318 318 – 3 = .................429 – 7 429429 – 7 = .................533 – 6533533 – 6 = .................142 – 4142142 – 4 = .................348 – 9348348 – 9 = .................Subtraction is 214 213 212 211 210 easy!317 316 3158 – 3 = 5 I am a student. I read in class 3. I do my homework. I respect my teacher.