year 8 maths

617
12 A
13 a
Fraction Decimal %
1
4
2
4
3
4
4
4
0.25 25%
0.5 50%
0.75 75%
1 100%
b
Fraction Decimal %
11
5
3
1000
13
200
1 19
100
4 1 5
2.2 220%
0.003 0.3%
0.065 6.5%
1.19 119%
4.2 420%
b
c
14 a
Fraction Decimal %
1
3
2
3
3
3
0.3 . 33 1 3 %
0.6 . 66 2 3 %
0.9 . 100%
Fraction Decimal %
1
5
2
5
3
5
4
5
5
5
0.2 20%
0.4 40%
0.6 60%
0.8 80%
1 100%
Fraction Decimal %
3
20
0.15 15%
15 1 , 12.5%, 0.125
8
16 65%, 80%
100
17 a × 100% = ×
100 = × 1
18 a
100
b ÷ 100% = ÷
100 = ÷ 1
BC
100
d DDB.CC%
b 0. CDB
c ABC%
e 100A
D % f 100(BA + C)
%
A
19 a 25%, 25%, 12 1 2 %, 12 1 2 %, 12 1 2 %, 6 1 4 %, 6 1 4 %
Exercise 4G
1 D
2 A
5
6
0.83 . 83 1 3 %
3 a 80% b 65% c 78% d 30%
e 20% f 80% g 40% h 37.5%
i 36 2 3 % j 70 5 6 % k 70 5 6 % l 94 4 9 %
4 a 30% b 45% c 31 1 4 % d 83 1 3 %
6
25
3
8
5
40
7
10
31
50
0.24 24%
0.375 37.5%
0.125 12.5%
0.7 70%
0.62 62%
e 160% f 683 1 3 % g 133 1 3 % h 266 2 3 %
5 a 8.33% b 66.67% c 42.86% d 37.5%
e 160% f 125% g 112.5% h 233.33%
6 a 5% b 25% c 5% d 25%
e 4% f 4000% g 300% h 600%
7 a 56% b 75% c 86% d 25%
e 40% f 33 1 3 %
8 a 100 b 10 c 5 d 2
9 a 18 b 9 c 17 d 16
e 3 f 3 g 5.6 h 175
i 132 j 39.6 k 44.8 l 36.8
10 a 13 b 80 c 100 d 217
e 67.5 f 51.2 g 36.75 h 70.8
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
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