Page 170 - Maths Skill - 6

168 Maths

Integrate Questions

11 7 9 3 1 3 33 11 111
1. < < < < < < 2. 3.
20 100 100 25 5 10 100 40 200
HOTS

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1. A mixed fraction is a combination of a natural number and a proper fraction; 1 .
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2. Two fractions are equivalent, if they represent proportional parts. The shaded parts of both the figures represent equivalent fraction 1 .
The shaded part of circle and triangle have different areas. 2

3. 4. (i) Milk drinkers, 1 (ii) 70 (iii) 105, Yes
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Assessment - 2

1. (d) 2. (a) 3. (b) 4. (c) 5. (a) 6. unit 7. improper fraction 8. 1 9. 1
10. 100 11. True 12. False 13. True 14. True 15. False 16. b 17. a 18. c 19. b
31 13 5 7 11 13 21 1 13 5
20. b 21. 2 22. 1 23. 900 24. 5400 25. , , , , 26. 3 27. 28.
36 30 8 8 8 8 8 18 18 18
Chapter - 6: Lines and Angles

Boot-up

A. 1. (iii) 2. (iv) 3. (i) 4. (iv) 5. (iv) B. 1. length 2. length 3. line segment 4. ray
5. one C. 1. True 2. False 3. True 4. False 5. False 6. True 7. True

Exercise - 6.1

1. (i) position or location on a plane (ii) plane (iii) parallel (iv) collinear
2. Points: A, B, C, D, E, F, G and H Lines: AB, BC, CD, DA, EF, FG, GH, HE, DH, AE, CG and BF
Planes: ABCD, EFGH, BFGC, AEHD, AEFB and DHGC 3. Unlimited 4. Exactly one
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5. (i) AC CD DB AD AB and CB (ii) DC CB BA (iii) AB BC CA (iv) AB BC CD DE EF FA
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(v) AB BC CD DE EA EC and EB (vi) AB BC CD DA AC BD DE EB AE and EC
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Exercise - 6.2
1. Do it yourself. 2. Do it yourself. 3. (i) 90° (ii) 30° (iii) 180°
Exercise - 6.3
1. (i) 90° (ii) 180° 2. (i) True (ii) False (iii) True (iv) True
3. (i) Acute: 23°, 89° (ii) Obtuse: 91°, 179° 4. (i) Acute (ii) Obtuse (iii) straight (iv) acute (v) an obtuse angle
5. (i) Right angle (ii) Straight angle (iii) Straight angle (iv) Right angle 6. (i) 0° (ii) 90° (iii) 180° (iv) 90°
7. (i) 45° (ii) 270° (iii) 120° (iv) 360° 8. (i) Acute (ii) Obtuse (iii) Reflex (iv) Obtuse (v) Acute (vi) Reflex
(vii) Reflex (viii) Obtuse 9. Do it yourself 10. Do it yourself 11. Do it yourself
Assessment Time
A. 1. (i) 2. (iv) 3. (i) 4. (ii) 5. (ii) 6. (iv) 7. (iv) 8. (i)
B. 1. zero angle 2. 180° (straight) 3. acute angle 4. right angle 5. right angle
C. 1. False 2. True 3. True 4. True D. 1. West 2. North E. 1. (a) 2. (a)
F. 1. (i) 54° (ii) 60° (iii) 270° 2. (i) Reflex (ii) reflex (iii) acute (iv) obtuse
3. Acute → 1, 3, 6, 8, Obtuse → 2, 4, 5, 7 4. Ray 5. Two