Page 222 - ICSE Math 4

40. (a) 90; Start from 15 and add 15 each me. (c) (d)
(b) 60; Start from 180 and subtract 30 each me.
(c) 68; Start from 28 and add 8 each me.
41. (a) 26. Students to do on their own.
27. (a) AB = BC = CA = 2 cm
(b) (b) PQ = PT = 3 cm
QR = TS = 4 cm
42. Students to do on their own.
D. 1. Smallest: 1,02,789; Largest: 9,87,210 RS = 5 cm
2. (a) 10,000 + 7,000 + 800 + 9; 1 TTh + 7 Th + 8 H + 9 O 28. (a) 42 sq. cm (b) 15 sq. cm
(b) 50,000 + 500 + 60 + 7; 5 TTh + 5 H + 6 T + 7 O 29. (a) 14 cm (b) 14 cm (c) 16 cm (d) 18 cm
(c) 3,00,000 + 90,000 + 8,000 + 100 + 70 + 8; 30. (a) 16 sq. cm (b) 30 sq. cm
3 L + 9 TTh + 8 T + 1 H + 7 T + 8 O 31. 5 L 800 mL
(d) 2,000 + 900 + 3; 2 T + 9 H + 3 O 32. 25 kg 200 g
3. 38,227, 83,227, 32,287, 23,287, 78,223 33. 15 m
4. (a) < (b) = (c) < (d) > 34. 1 h 5 min
5. (a) XX (b) XIII
35. 3:30 p.m.
6. Roman I V X L C D M 36. (a) 50°C (b) 149°F (c) 80°C (d) 77°F
Numeral
37. (a) 12 students (b) Grapes (c) Mango
Hindu-Arabic
1 5 10 50 100 500 1,000 (d) No (e) 66 students
Numeral
38. Week Number of Cookies
7. (a) Th H T O (b) Th H T O
3 2 6 6 4 5 6 3 I
4 3 2 3 + 2 6 3 8
II
+ 2 3 0 0 7 2 0 1 Scale
9 8 8 9 = 600 cookies
III
8. 16,000 items 9. ` 22,133
IV
10. (a) Th H T O (b) Th H T O
7 6 8 2 2 1 3 6
V
– 5 3 4 1 – 0 1 1 4
2 3 4 1 2 0 2 2 VI
11. 2,880 apples 12. 2,110 pastries
(a) 2,400 cookies (b) 15,600 cookies
13. 1,440 cabbages 14. 2,352 apples
(c) week II (d) week I and week V
15. Students to do on their own.
(e) 2,400 cookies
16. 9 pages 17. 29 books 18. 120 cookies
39. (a) 60 oranges (b) week II (c) week III
19. (a) 96 (b) 60 (c) 504
20. (a) 56, 112, 168, 224, 280 40. (a) (b)
(b) 12, 24, 36, 48, 60
(c) 18, 36, 54, 72, 90
(d) 50, 100, 150, 200, 250 41.
56
3 1
21. (a), (c) and (d) 22. or 24 32
9 3
10 14 18
5 1 4
23. or 24. km 4 6 8 10
10 2 5
25. (a) (b)
42. (a) Z Y X W V U T
(b) 69, 66, 63, 60, 57, 54

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