Page 210 - ICSE Math 4

Answers

Chapter 1: Numbers 8. (a) 96,258 (b) 7,95,405 (c) 72,285
(d) 4,31,467 (e) 3,21,698 (f) 17,541
Exercise 1.1
9. (a) 8 ten thousands + 6 thousands + 2 hundreds + 8 ones
1. (a) 27,309 (b) 6,31,405 (b) 3 lakhs + 4 ten thousands + 5 thousands + 1 ten +
2. Indian Number Interna onal 8 ones
Number
System Number System (c) 6 lakhs + 7 tens
(a) 2694 2,694 2,694 (d) 6 lakhs + 5 ten thousands + 1 hundred + 8 tens +
(b) 53470 53,470 53,470 3 ones
(c) 699099 6,99,099 699,099 Exercise 1.2
(d) 9876543 98,76,543 9,876,543 1. (a) > (b) = (c) < (d) >
(e) 7698542 76,98,542 7,698,542 2. (a) 2,697 < 3,824 < 73,971 < 84,183 < 94,281
(b) 7,480 < 9,984 < 10,269 < 10,426 < 11,397
3. Indian Number Interna onal
Number (c) 83,462 < 83,625 < 84,631 < 85,316 < 1,94,940
System Number System
(a) 20783 Twenty thousand Twenty thousand (d) 3,07,654 < 3,19,706 < 3,20,284 < 3,39,513 < 3,42,053
seven hundred seven hundred 3. (a) 8,503 > 8,375 > 7,219 > 7,128 > 7,063
eighty-three eighty-three (b) 18,963 > 18,432 > 18,234 > 17,946 > 9,945
(b) 91072 Ninety-one Ninety-one (c) 2,54,419 > 2,40,098 > 2,32,817 > 2,23,705 > 2,17,390
thousand thousand (d) 9,99,872 > 9,14,827 > 9,08,743 > 8,23,999 > 8,13,948
seventy-two seventy-two 4. (a) Predecessor: 23,079; Successor: 23,081
(c) 756392 Seven lakh fi y- Seven hundred (b) Predecessor: 45,198; Successor: 45,200
six thousand fi y-six thousand
three hundred three hundred (c) Predecessor: 4,98,997; Successor: 4,98,999
ninety-two ninety-two (d) Predecessor: 5,00,898; Successor: 5,00,900
(d) 989597 Nine lakh eighty- Nine hundred 5. (a) 25,648 (b) 3,72,060 (c) 8,95,520 (d) 4,41,148
nine thousand eighty-nine
Exercise 1.3
fi ve hundred thousand fi ve
1. (a) Smallest: 13,478; Largest: 87,431
ninety-seven hundred ninety-
seven (b) Smallest: 20,358; Largest: 85,320
4. Indian Number Interna onal (c) Smallest: 10,269; Largest: 96,210
S. No. (d) Smallest: 40,078; Largest: 87,400
System Number System
2. (a) Smallest: 1,23,578; Largest: 8,75,321
(a) 28,333 28,333
(b) Smallest: 3,00,469; Largest: 9,64,300
(b) 9,74,665 ---------
(c) --------- 932,470 (c) Smallest: 1,22,358; Largest: 8,53,221
(d) --------- 599,999 (d) Smallest: 4,05,699; Largest: 9,96,540
3. Smallest: 2,00,357; Greatest: 7,53,200
5. (a) Face value of 1 is 1 and place value of 1 is 1,000.
4. 3,04,596; 3,40,596; 3,40,956; 3,04,956; 3,06,954; 3,06,594
Face value of 8 is 8 and place value of 8 is 80.
5. 22,439; 22,493; 29,423; 23,429; 24,293; 24,239
(b) Face value of 2 is 2 and place value of 2 is 20,000.
Face value of 4 is 4 and place value of 4 is 400. Exercise 1.4
(c) Face value of 2 is 2 and place value of 2 is 2,000. 1. (a) 550 (b) 6,910 (c) 43,790 (d) 1,90,270
Face value of 9 is 9 and place value of 9 is 9. 2. (a) 500 (b) 7,300 (c) 75,800 (d) 4,46,800
(d) Face value of 4 is 4 and place value of 4 is 4,00,000. 3. (a) 7,000 (b) 13,000 (c) 4,76,000 (d) 8,99,000
Face value of 2 is 2 and place value of 2 is 20. Review Exercise
(e) Face value of 4 is 4 and place value of 4 is 400. 1. (a) TTh Th H T O (b) L TTh Th H T O
Face value of 6 is 6 and place value of 6 is 6.
6. (a) 8,000 (b) 80,000 (c) 800 (d) 8
7. (a) 20,000 + 1,000 + 900 + 80 + 5
(b) 90,000 + 2,000 + 100 + 90 + 4
(c) 7,00,000 + 50,000 + 4,000 + 200 + 70 + 0 2. (a) 6,475: Six thousand four hundred seventy-fi ve
(d) 8,00,000 + 80,000 + 8,000 + 800 + 80 + 8 (b) 92,087: Ninety-two thousand eighty-seven
200