Topic 7 Percentages With Answer Key - Math Quest 7 Page 37
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40number and algebra
number and algebra
Answers
Percentages
TOPIC 7
7.2 Percentages as fractions
7.3 Percentages as decimals
17
29
81
79
99
0.36
0.14
0.19
0.28
0.73
1 a
b
c
d
e
1 a
b
c
d
e
100
100
100
100
100
0.92
0.66
0.59
0.11
0.99
f
g
h
i
j
43
3
19
67
33
f
g
h
i
j
0.09
0.07
0.04
0.01
0.25
k
l
m
n
o
100
100
100
100
100
9
189
243
127
353
2.00
1.5
3.6
p
q
r
k
l
m
n
o
100
100
100
100
100
0.123
0.316
0.592
0.849
2 a
b
c
d
1
4
1
7
3
2 a
b
c
d
e
0.376
0.421
0.219
0.169
e
f
g
h
2
5
4
20
5
0.107
0.111
0.031
0.046
i
j
k
l
17
1
9
49
3
f
g
h
i
j
20
10
20
50
25
m
0.092
n
0.059
o
0.068
p
0.088
1
14
37
1
1
1
k
l
m
n
o
0.1425
0.3175
0.2355
0.4575
q
r
s
t
20
25
50
50
10
0.0005
0.0102
0.0401
0.0002
u
v
w
x
1
9
4
2
5
= 2
= 5
1
1
p
q
r
s
t
3 a
B
b
C
c
A
d
D
2
10
5
1
1
3
1
17
u
0.17
4 a
b
25
100
1
1
3
1
1
3 a
b
c
d
e
1
0.0005
5 a
b
200
500
400
150
1000
2000
1
3
33
3
31
0.0285
6
f
g
h
i
j
160
550
400
80
150
7
2.18
29
57
241
31
9
k
l
m
n
o
0.138
8
300
400
400
200
40
0.0835
14
83
7
101
41
9
1
1
p
q
r
s
t
125
800
60
200
200
10 a
23, 24, 24, 24.
1
u
0.23, 0.24, 0.24, 0.24
b
3
It does not matter as long as both values are rounded up or
c
7
9
59
197
81
4 a
b
c
d
e
down at the same digit.
200
125
500
1000
250
·
143
629
31
87
81
23.6
%
f
g
h
i
j
11 a
200
1000
200
1000
500
23.60, 23.67, 23.66.
b
283
13
2069
5799
1079
k
l
m
n
o
c
The hundredths digit determines the order of these
1000
80
5000
10 000
1250
907
243
1
percentages.
p
q
r
5000
2000
2000
0.378, 0.396, 0.309, 0.345, 0.328
12 a
B
E
C
D
5 a
b
c
d
b
39.6%, 37.8%, 34.5%, 32.8%, 30.9%
0.396, 0.378, 0.345, 0.328, 0.309
c
20
1
=
6
100
5
Various answers are possible.
d
35
7
=
7
13 a
0.07291, 0.7291, 7.291
100
20
They are 100 times smaller.
b
45
9
=
8
100
20
7.4 Fractions and decimals to percentages
8
32% are girls,
9
21%
48%
9%
93%
28%
1 a
b
c
d
e
25
2
23
f
72%
g
16%
h
80%
i
12%
j
60%
8 people
10 a
b
c
25
25
40%
24%
10%
35%
5%
k
l
m
n
o
17
83
17
11 a
b
c
20%
80%
20%
40%
80%
p
q
r
s
t
100
100
u
70%
v
65%
w
30%
x
60%
1
Less than
12
50%
25%
60%
25%
40%
2
2 a
b
c
d
e
7
81
17
13
20%
50%
50%
75%
80%
13 a
b
c
d
f
g
h
i
j
20
100
20
200
10%
20%
k
l
4
14 a
1
2
2
4
5
3 a
33
%
b
16
%
c
22
%
d
44
%
1
3
3
9
9
b
3
2
5
1
2
e
27
%
f
46
%
g
55
%
h
56
%
c
The percentage is different for the two molecules
11
3
9
4
2
1
9
14
because the total number of atoms is different in the two
91
%
87
%
7
%
58
%
i
j
k
l
3
2
13
17
molecules.
2
1
2
14
%
83
%
66
%
·
m
n
o
7
3
3
33.33
% is a recurring decimal with no exact value.
15
D
B
A
E
4 a
b
c
d
4
16 a
45%
32%
56%
68%
90%
5 a
b
c
d
e
5
84%
12%
8%
2%
10%
1
f
g
h
i
j
b
5
99%
5%
29%
9%
19%
k
l
m
n
o
Not necessarily. There could be an overlap of students with
c
10.5%
0.1%
6.7%
p
q
r
blue eyes who have pets.
6 a
30%
b
80%
c
90%
d
10%
75% in the previous game
0.2%
0.7%
0.5%
0.9%
17 a
e
f
g
h
b
i
Increased percentage
132%
150%
865%
205%
i
j
k
l
Decreased percentage
ii
m
450%
n
0.015%
o
200%
p
1000%
Unchanged
500%
10 000%
iii
q
r
D
A
E
C
7 a
b
c
d
280
Maths Quest 7
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