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\ 07-Nov-2024 Bharat Arora Proof-8 Reader’s Sign _______________________ Date __________

Practice Time 10C 2. (+18) + (–5) + (–2) – (–9) [Answer may vary]
1. (a) –19 (b) 0 (c) –1234 (d) 675, –888 3. (a) Positive (b) Can be positive or negative
2. (a) 4 (b) 0 (c) –2 (c) Negative (d) Can be positive or negative
3. (a) 27 (b) 9 (c) 2 (d) –8 (e) Negative (f) Can be positive or negative
(e) 1561 (f) –143 Chapter Assessment
4. (a) > (b) < (c) > (d) > A. 1. (c) 2. (b) 3. (b) 4. (d) 5. (b)
5. (a) 84 (b) –8 6. (c) 7. (a) 8. (d) 9. (b)
6. (a) 119 (b) –58 (c) –1777 (d) –4396 B. 1. (a) 2. (d) 3. (a)
7. (a) –215 (b) 1207 8. 102 9. 10 C. 1. (d) 2. (a) 3. (e) 4. (b) 5. (c)
10. 10°C 11. Nilabh 12. lose, 173 calories
D. 1. F 2. F 3. F 4. T 5. T
Quick Check 6. F 7. F
1. 13 2. –3 3. –4 4. –11 E. 1. 161
5. 5 6. 1 7. –1 8. –1 2. (a) 15 floors up.
Think and Answer (b) 20 m below the danger mark of river Ganga.
–6 –4 –2 (c) A loss of `450.
–5 –7 (d) Losing by a margin of 1500 votes.
–1 –8 –3 3. Three Jumps
4. 20 points
Practice Time 10D 5. (a) –324 (b) –3034
1. (a) –6 < –5 < –4 < –3 < –2 < –1 6. 21 – 9 + (–13) = 21 – 22 = – 1
(b) –29 < –28 < –27 < –26 < –25 < –24 Dakshita wrongly put a + sign with the sum while she was adding two
(c) – 14 < –13 < –12 < –11 < –10 < –9 negative integers.
(d) –249 < –248 < –247 < –246 < –245 < –244 < –243 < –242 < –241 7. 3rd floor
< –240 < –239 < –238 < –237 < –236 8. 25 ice creams
(e) –2 < –1 < 0 < 1< 2 9. Team C
(f) 5 < 6 < 7 < 8 < 9 < 10 < 11 < 12 < 13 < 14 < 15 10. –1, 0, 1, 2, 3 [Answer may vary]
2. (a) –10 –2 16 (b) 6 8 –16 (c) 7 –7 –4 11. (a) A : +8 km, B: –12 km, C: + 11 km, D: –9 km (b) Point C
5 –5 11 –5 –10 –5 (c) 23 km (d) 17 km below the sea level.
9 2 –7 –19 –2 19 –1 –8 5 Brain Sizzlers
Answers may vary. Nidhi, 45
3. (a) –6 –1 –8 (b) –5 0 –7 Model Test Paper – 2
–7 –5 –3 –6 –4 –2 A. 1. (d) 2. (c) 3. (c) 4. (c) 5. (d)
–2 –9 –4 –1 –8 –3 6. (c) 7. (b) 8. (d) 9. (b) 10. (a)
Answers may vary. B. 1. sides and angles 2. 36 cm 3. 1 4. diagonal
4. –9, –7, –5, 0, 2, 7, 9, 11 5. (a) –1 (b) –8 (c) –14 5. twin
Mental Maths C. 1. F 2. T 3. F 4. T 5. T
D. 1. (a) –99, Additive inverse = 99 (b) –113, Additive inverse = 113
1. (a) 0 5 –2 (b) –4 1 0 (c) –2 3 –4 2. (a) AD, BC (b) MN, AB (c) AC, BD (Answers may vary)
–1 1 3 3 –1 –5 –3 –1 1 3. 96 4. 412 sq. cm 5. H and S
4 –3 2 –2 –3 2 2 –5 0
6. Total distance covered = 3 47 km ; No
(d) –2 3 2 60
5 1 –3 8. (a) 15 (b) yes (c) 9 19 3
,
,
0 –1 4 155 31 31 31

323 Answers