Topic 7 Percentages With Answer Key - Math Quest 7 Page 25
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40number and algebra
David shot 40 baskets from the free throw
11
line. Twenty-five of the 40 were goals. What
percentage of David’s shots were goals?
Jordan had a mass of 60 kg. After one
12
month of not eating McDonald’s, he lost
4 kg. What percentage of his mass did
Jordan lose?
After practising for one month, Tayla increased
13
the speed of her tennis serve from 120 km/h to
140 km/h. Give exact answers.
By how much has the speed of Tayla’s serve
a
increased?
By what percentage has the speed of Tayla’s
b
serve increased?
There are 28 students in a class. A survey
14
showed that 12 walk home, 8 catch a bus and
8 ride in a car. Write the answers as mixed
numbers.
Calculate the percentage of students
a
who walk.
Calculate the percentage of students who
b
catch a bus.
Calculate the total percentage who walk
c
or catch a bus.
Calculate the percentage of students who
d
ride in a car.
During one NRL season, the Melbourne
15
Storm won 16 out of 22 games. What
percentage of games did the Storm lose?
The teacher’s mark book shows Karina
16
has achieved the following test results in Maths.
Topic
Probability
Measurement
Algebra
Equations
Geometry
Score
15
13
27
70
95
20
15
30
80
100
Percentage
Copy and complete the table to show Karina’s percentage for each test (round
a
answers to the nearest whole number).
In which test did Karina achieve her best result?
b
Find Karina’s average percentage mark by adding up the percentages and dividing
c
by 5, the number of tests.
reaSOnIng
Which of the following quantities represents:
17
the highest percentage
the lowest percentage
a
b
the same percentage?
Explain your reasoning.
c
d
200 g out of 500 g
420 g out of 840 g
300 g out of 450 g
350 g out of 700 g
268
Maths Quest 7
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