Page 325 - ICSE Math 8

Self-Testing Exercise 5 5. Y
1. 7 2 cm; 98 cm 2. 200 m 20
2
3. (a) 306 m (b) 430 m 4. 22 cm; 660 cm 18
2
2
2
16
5. 49 cm; 55 m 6. 43 cm 14
7. 5 cm; 78.5 cm 8. 205 m 9. 14 cm 12
2
2
10
10. 2,350 cm ; 25 2 cm 11. 64 Number of students 8
2
12. (a) 15,624 cm (b) 8,876 cm (c) 2.219 kg 6
3
3
4
Self-Testing Exercise 6 2 Red Orange Blue Green Yellow
0 Colours X
1. Height (in cm) Tally marks Frequency
125 ||| 3 6.
127 | 1 Orange
Red
128 || 2 72° 90°
Blue 36°
130 |||| 4 108° 54°
Yellow
142 |||| 5 Green

152 ||| 3

158 || 2 Question Bank

True or False
2. Marks Tally marks Frequency
20–30 |||| 4 1. False 2. True 3. True 4. False 5. True
6. False 7. False 8. False 9. True 10. False
30–40 ||| 3
11. False 12. True 13. False 14. True 15. True
40–50 |||| || 7
16. False 17. False 18. True 19. True 20. False
50–60 |||| 5 21. True 22. False 23. True 24. False 25. False
60–70 || 2 26. False 27. True 28. False 29. False 30. True
70–80 | 1 31. False 32. False 33. True 34. False 35. True
80–90 | 1 36. False 37. True 38. False 39. False 40. True
90–100 |||| || 7 41. True 42. True 43. False 44. True 45. True
46. False 47. True 48. False
3.
Fill in the Blanks
1. Closure 2. Commutative 3. x m – n 4. 10 3
5. zero, one 6. 1 7. perfect cube 8. 18
9. 6 × 10 + 8 × 10 10. 9 11. = 12. disjoint
0
1
13. 12.5 14. 160 15. > 16. 1,034 g, 470 g
1
17. 18. 2.5 hours 19. Profit % 20. ` 650
10
4. 30° 21. 6 months 22. quarterly 23. like
Bus Bicycle 24. coefficient 25. 24 26. a – b
75° Scooter
60° 27. perfect square 28. (x + a)(x + b) 29. negative
Car 90° 30. replacement set or domain 31. convex
105° Motor 32. decagon 33. possible 34. parallelogram
cycle 35. square pyramid 36. regular polyhedron
37. perpendicular bisector 38. reflection

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