Page 284 - ICSE Math 6

(c) –1 > –2 > –3 > –4 > –5 > –6 > –7 6. (a) 7 > 5 > 4 > 0 > –6 > –9 (b) 3 > 1 > –4 > –5 > –8
(d) –90 > –91 > –92 > –93 > –94 > –95 > –96 > –97 7. (a) 21 (b) 108 (c) 110 (d) –178 (e) 95 (f) –50
8. (a) > (b) > (c) > (d) < Mental Maths
9. (a) –11 < –9 < –5 < 0 (b) –123 < –98 < –76 < 121 1. (a) True (b) True (c) False (d) False (e) False
(c) –827 < –728 < –287 < –278 (f) True
10. (a) –99 > –567 > –777 > –990 2. (a) 0 (b) 27 (c) 14 (d) 5 (e) 10 (f) 100
(b) + 876 > 0 > –706 > –901 3. (a) < (b) < (c) > (d) = (e) < (f) >
(c) 1 > –167 > –237 > –953
11. (a) 13 (b) 27 (c) 2 (d) 18 Practice Time
12. (a) –4 (b) –4 (c) right (d) right 1. –11 –5 0 5 10 13
13. (a) False, –170 is greater than –270.
(b) False, 0 is neither positive nor negative. 2. –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3
(c) False, on the number line –5 is to the left of –1. –4 + (–6) = –10
(d) True
(e) False, the absolute value of an integer is always greater 3.
–3
–2
than or equal to the integer. –8 –7 –6 –5 –4 –8 – (–5) = –3 –1 0 1 2 3
4. –31 5. 2 6. –2
Exercise 3.2 7. Smallest: –11; Largest: –1
1. (a) –140 (b) –10 (c) –361 (d) 151 (e) 538 8. Smallest: Not defined, Largest: –20
(f) –620 9. 0, –23, 56, –89, –129 10. –37
2. (a) –3 (b) –5 (c) –200 (d) 21 (e) 113 (f) –103 11. (a) 3 (b) –55 (c) –21 (d) –205 (e) 146 (f) 910
3. (a) 2 (b) –6 (c) 4 (d) 1 12. (a) –6 < –2 < 0 < 5 < 9 < 12
(b) –16 < –11 < –9 < 2 < 8 < 10
4. (a) (c) – 20 < –6 < –1 < 9 < 18
0 1 2 3 4 5 6 7 8 9 10 11 12
8 + 2 = 10 (d) –13 < –12 < –11 < 7 < 14 < 18
(e) –22 < –21 < –15 < 15 < 20
(b) (f) –23 < –10 < –9 < –6 < 9
–13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0
–7 + (–5) = –12 13. (a) 7 > 5 > –6 > –8 > –12
(b) 3 > 2 > 0 > –2 > –3 > –8
(c) (c) 9 > 1 > –3 > –5 > –11
–12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 (d) 15 > 9 > 5 > –16 > –17
–12 + 9 = –3
(e) 18 > 12 > –2 > –11 > –13
(d) (f) 23 > 17 > 15 > –13 > –17
–13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 14. ` 30,500 15. –5°C 16. –12°C
–9 + (–3) = –12
Think Smart
5. (a) 1. (a) + Second Number –8
–3
–6
–6 –5 –4 –3 –2 –1 0 1 2
–6 – (–2) = –4 First Number –9 –12 –15 –17
–3
0
–6
–8
(b) +21 +18 +15 +13
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Second Number
9 – (–5) = 14 (b) – 5 –10 9

(c) First Number 12 +7 +22 +3
0 1 2 3 4 5 6 7 8 9 –7 –12 +3 –16
7 – 3 = 4 –18 –23 –8 –27
2. 2,455 m
(d)
–16 –15 –14 –13 –12 –11 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 3. O: 8; V: 5; M: 9; S: –7; T: 4; G: –4; Message: “I LOVE
–10 – 6 = –16 MATHS”

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