Page 232 - ICSE Math 5
P. 232
Exercise 4.2 3. (a) 1,40,595 (b) 6,84,000
1. (a) 1,07,400 (b) 9,12,800 (c) 54,59,000 (c) 24,03,750 (d) 1,76,92,800
(d) 5,65,600 (e) 24,66,200 (f) 2,09,400 4. (a) 59,300 (b) 12,68,000
2. (a) 3,96,720 (b) 1,00,375 (c) ` 8,88,500 (c) 1,64,64,000 (d) 2,55,70,000
(d) 21,07,200 pencils (e) 7,125 pieces (f) ` 50,000 5. (a) 1,44,450 (b) 3,60,000
3. (a) 28,52,276 (b) 1,62,375 (c) 94,732 (c) 58,51,200 (d) 1,03,460
(d) 7,94,484 (e) 30,32,96 (f) 10,95,000 6. (a) 2,64,600 (b) 2,28,206 (c) 39,38,475
Exercise 4.3 7. (a) 1,67,400 (b) 18,08,000
1. (a) Quo ent = 23; Remainder = 11 (c) 52,90,000 (d) 5,65,600
(b) Quo ent = 75; Remainder = 12 8. (a) 46 (b) 21 (c) 32 (d) 52 (e) 91
(c) Quo ent = 11; Remainder = 18 9. (a) 50,000 stripes (b) 1,10,500 bangles
(c) 12 (d) 22,500 newspapers
(d) Quo ent = 22; Remainder = 20
10. (a) 5 (b) 9 (c) 22 (d) 88
(e) Quo ent = 332; Remainder = 5
(f) Quo ent = 421; Remainder = 10 Chapter 5: Factors and Mul ples
(g) Quo ent = 290; Remainder = 0 Exercise 5.1
(h) Quo ent = 465; Remainder = 2 1. (a) 2 (b) prime; composite (c) 4 (d) 1
2. (a) 12 (b) 141 (c) 14 (d) 5 (e) 44 (f) 6 2. (a) 1, 3, 5, 7 and 21 (b) 1, 2, 4, 8 and 53
3. (a) 965 (b) 234 (c) 171 (d) 301 (e) 321 (f) 249 (c) 1, 2, 4, 8 and 14 (d) 1, 2, 3, 4 and 6
Exercise 4.4 3. (a) 248 (b) 150
1. (a) 42 (b) 49 (c) 38 (d) 8
(e) 221 (f) 105 (g) 177 (h) 155 2 124 2 75
2. (a) 4,352 words (b) 95 bundles (c) 2 muffi ns
(d) 37 blocks (e) 60 rental cars 2 62 3 25
3. (a) 52 boxes (b) 85 packets (c) 98 kg
(d) 13 rows (e) 76 rows (f) 7,500 pencils 2 31 5 5
4. (a) 45 (b) 71 (c) 9 (d) 13 (e) 24 (f) 310 (c) 46 (d) 398
Exercise 4.5
(a) 31 (b) 17 (c) 8 (d) 18 (e) 231 (f) 0 2 23 2 199
Review Exercise 4. (a) 54, 72, 90 and 108
1. Students to do on their own. (b) 62, 63, 64, 65, 66, 68 and 69.
2. (a) 2,11,440 (b) 1,40,512 (c) 21,18,800 (c) 23, 29, 31 and 37
(d) 8,30,412 (e) 2,38,50,000 (f) 61,07,904 5. (a) Yes (b) No (c) Yes
3. (a) 45 (b) 25 (c) 39 (d) 96 (e) 87 (f) 82 6. (a), (b) and (e)
4. (a) 21,930 (b) 1,15,722 (c) 9,90,468 7. Prime: 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29
(d) 3,79,323 (e) 73,79,730 (f) 9,74,820 Composite: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22,
5. (a) 1,98,450 (b) 12,72,756 (c) 7,54,832 24, 25, 26, 27, 28 and 30
(d) 1,39,70,880 (e) 1,95,536 (f) 8,26,472 Twin primes: (3, 5), (5, 7), (11, 13) and (17, 19).
6. (a) 436 (b) 121 (c) 102 (d) 468 (e) 394 (f) 152 Exercise 5.2
7. (a) 42 (b) 20 (c) 202 (d) 229 (e) 89 (f) 235 1. Divisible by 3: (a), (c) and (d)
8. (a) 70,488 dots (b) 98,400 beads (c) ` 2,496 Divisible by 9: (c) and (d)
(d) 12 (e) 7,245 magazines 2. Divisible by 5: (a), (b) and (d)
9. (a) 2,62,108 (b) 3,02,850 (c) 78 (d) 56 Divisible by 10: (b) and (d)
10. (a) 18 (b) 82 (c) 163 (d) 37 3. (a) and (c)
Values and Life Skills 4. Number 2 3 4 5 6 8 9 10 11
1,014 mobile phones 5,381 × × × × × × × × ×
81,620 × × × ×
Progress Worksheet
61,800 × ×
1. (a) Q = 203, R = 2 (b) Q = 60, R = 36
(c) Q = 6, R = 379 65,175 × × × × × ×
2. (a) 25 (b) 42 (c) 173 4,26,972 × × × × ×
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