Page 185 - Maths Skill - 3

Answers 183

Exercise 7.5
1. (a) = (b) = (c) < (d) < (e) = (f) < (g) > (h) >

2
3
2
3
2
5
5
3
5
2. (a) > > > 1 (b) 4 > > > 1 (c) 6 > > > 2 (d) 7 > > > 1
2 2 2 2 5 5 5 5 7 7 7 7 8 8 8 8
1
2
3
5
3
3. (a) < < < 4 (b) 1 < < < 6 (c) 3 < 5 < 7 < 9 (d) 4 < 5 < 7 < 8
5 5 5 5 8 8 8 8 13 13 13 13 17 17 17 17
Assessment Time
A. 1. b 2. c 3. b 4. c 5. c 6. b 7. b 8. b
7
3
3
5
2
5
, ,
B. 1. Numerator = 4 2. Five-Twelfths 3. 1 1 1 4. 8 > > > 5. < < < 6
5 7 9 9 9 9 9 7 7 7 7
C. 1. c 2. c 3. d 4. a
Assessment 2
1. d 2. c 3. a 4. d 5. b 6. c 7. a 8. b
9. 8 10. 18 11. 56 12. 72 13. Fraction 14. False 15. False 16. True
17. True 18. b 19. c 20. d 21. c 22. ` 15 23. 3150 lit. 24. 9900
4
25. 26. 49 27. ` 144
5
CHAPTER - 8: GEOMETRY
Boot-up
Rectangle; Square, all; Triangle, 3; Slanting lines = 2, Horizontal lines = 5, Vertical lines = 4
Exercise 8.1

1. M, N and S 2. (a) Line (b) Line segment (c) Ray 3. (a) PQ, QR and RP

(b) KJ, JI, IH, HG, GF and FK 4. , Only one line segment
P Q
5. (a) AD and BC (b) AB and DC (c) AC and BD 6. (a) two (b) definite (c) point

(d) position or location (e) starting point, end point (f) part
Exercise 8.2

1. Do it yourself. 2. Do it yourself. 3. (a) 0 (b) 0 (c) c (d) c
Exercise 8.3
1. (a) Triangle (b) Rectangle (c) Circle 2. (a) Rectangle (b) Rectangle (c) Square

(d) Circle 3. (a) opposite (b) no, no (c) 3, 3 (d) sides (e) 4, 4
(f) 2 4. (a) 5 (b) 4 (c) 6 5. (a) 3 (b) 6

(c) 9 6. (a) 4, 1, 1, 1 (b) 8, Nil, Nil, 2 (c) Nil, 9, Nil, 3 7. Do it yourself
Exercise 8.4

1. (a) curved (b) one (c) rectangle (d) cylinder (e) 6 (f) sphere
2. (a) Cylinder (b) Sphere (c) Cone (d) Cylinder (e) Cone

3. (a) cylinder (b) cube (c) cuboid (d) sphere (e) cone (f) cylinder