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\ 06-Jan-2025 Bharat Arora Proof-3 Reader’s Sign _______________________ Date __________

Chapter 10: Mensuration Chapter Assessment
A. 1. (b) 2. (c) 3. (c) 4. (a) 5. (c) 6. (a)
Let’s Recall B. 1. (a) 2. (a) 3. (d) 4. (a)
1. (a) 2. (d) 3. (d) 4. (d) C. 1. 10a 2 2. Volume 3. Lateral 4. 36 : 1 5. 12 cm
5. (c) 6. (b) D. 1. False 2. False 3. True 4. False 5. True 6. True
2
Quick Check E. 1. 66 cm 2 2. 60 m 2 2
(b) 209.05 m
Square, 400 cm 2 3. (a) 821.1 m 5. 12800 bricks 6. Figure B (c) 248.99 m
3
4. 4500 m
Think and Answer 7. (a) 30100 m 2 (b) 6450 m 8. 4455 litres
2
(b) Mental Maths
Quick Check 1. 180 m 2 2. 3 : 2 3. 700% 4. 75%
2.4 cm Unit Test – 3
Practice Time 10A A. 1. (a) 2. (b) 3. (c) 4. (b) 5. (c)
1. `1,08,00,000, `1,98,000 2. 64 m 6. (b) 7. (c) 8. (c) 9. (c) 10. (a)
2
3. 10896 m , 181104 m 2 B. 1. –99 2. 60xyz 3. Hexagon 4. 2 5. 16 cm
4. (a) 24 cm 2 (b) 11.2 cm 2 (c) 22 cm 2 C. 1. True 2. True 3. False 4. True 5. False
2
2
2
5. (a) 8.5 cm 2 (b) 6 cm 2 (c) 5 cm 2 D. 1. a + ac + b – bc + a – b – c 2. 98 3. x + 2x – 6
2
6. 45000 tiles 7. 2144 cm 2 4. 3x – 25x + 3 6. 360 7. 161280 litres
Quick Check 8. 1 : 72
1. 205 cm 2 2. 24 cm 2 Chapter 11: Exponents and Powers
Think and Answer Let’s Recall
No 1. (a) 1 (b) 32 (c) 81 (d) 1024
Quick Check 2. (a) 10 4 (b) (–7) 5 (c) –(5) 6 (d) 2 3
(b) 256
6 cm 3. (a) 81 10 (b) 1.831262 × 10 16
4. (a) 6.75 × 10
Practice Time 10B (c) 2.210735 × 10 3
1. (a) 32 cm 2 (b) 170 cm 2 (c) 270 cm 2 5. (a) 22000 (b) 98100000000 (c) 123100
2. (a) 104.5 cm 2 (b) 24 cm 2 (c) 6 cm 2 Life Skills
3. 3900 cm 2 4. 0.88 m 5. 170 cm 2 2 10
2
2
2
6. I = III = 96 cm , II = IV = 80 cm 7. 24 cm Think and Answer
8. 27 cm, 33 cm 9. 292 m 10. 24 cm 1. 5 hours 2. Number of bacteria = 1024
2
11. `3750 12. 384 cm , 20 cm Practice Time 11A
Practice Time 10C 1. (a) Base = –5, Exponent = 4 (b) Base = 9, Exponent = 8
1. 82 cm 2 2. (a) 750 cm 2 (b) 51 cm 2 (c) Base = −2 , Exponent = 3 (d) Base = 1 , Exponent = 5
3. (a) 59.5 cm 2 (b) 6700 m 4. 337.5 m 2 5 4
2
Think and Answer 2. (a) 6 5 (b) (–2) 7 (c)   6

2
126 cm 2  5
Quick Check 6 20  2 9  −  3 8

9
2
1. 704 cm , 1936 cm 2 2. 12.57 m , 18.86 m 2 3. (a) 3 (b) (–25) (c)   (d)   7  
2
Practice Time 10D (e) 2 × 5 10 (f) 2 30 (g)  2 5 (h) (–21) 4
5
2
2
7
1. (a) 64 cm , 96 cm 2 (b) 452.57 cm , 678.85 cm 2  

2
(c) 156 cm , 236 cm 2 27 3 1   5 6
2
2. 1000 cm 2 3. 170 m 4. `14000, `23000 4. (a) a (b) 5a (c) (d) −  
  6
2
2
5. 1296 cm , 1944 cm 6. 5 cm 5. (a) 3 (b) 1 (c) 2 4 (d) 4
7. 6600000 cm 8. 4 times 9. l = 15 m, b = 9 m , h = 9 m Quick Check
2
2
2
10. 16800 cm 2 11. 352 cm , 660 cm 12. 4 cm
2
13. 1760 m 14. `1584 15. 5 cans Exponential Expanded Value Positive
Quick Check Form Form Exponential Form
1. 36 cubic units 2. 36 cubic units 3. 36 cubic units 3 3 3 × 3 × 3 27 3 3
Think and Answer 3 0 1 1 3
(a) Volume (b) Surface area (c) Volume 3
Practice Time 10E 3 –3 3 (–1) × 3 (–1) × 3 (–1) 1 1 3
1. (a) 72 cubic units (b) 60 cubic units (c) 64 cubic units 27 3
2. (a) 1440 cm 3 (b) 9 m 3 (c) 512 cm 3 (d) 2.197 m 3 3 –4 3 (–1) × 3 (–1) × 3 (–1) × 3 (–1) 1 1
(e) 17248 cm 3 (f) 0.539 m 3 81 3 4
3. 20 cm 4. 22680 litres 5. 64 cubes 6. 6 cm Think and Answer
3
7. 86.24 m 8. 27 times of original volume 1 20
9. 1 : 6 10. 21 cm, 14 cm 11. Twice of original volume 1. 216 2. 100
12. 1: 6 13. 474.32 mL 14. 30 hours Practice Time 11B
Brain Sizzlers 1. (a) 36 (b) 729 (c) 729 (d) 64
3
1000 cm , 600 cm 2 27
Maths Connect (e) 5 (f) 27 (g) 13 (h) 2
53000 m 2 11 16 3
Mathematics-8 368