Page 76 - Cambridge Checkpoint Mathematics Coursebook 7_Slide 02

7.1 Simplifying fractions

✦ Exercise 7.1

1 Copy and complete these equivalent fractions.
÷2 ÷3 ÷4 ×2 ×5 ×?

a 4 = b 9 = c 8 = d 1 = e 3 = f 4 = 12
10 5 12 3 3 20 7

÷2 ÷3 ÷4 ×2 ×5 ×3

2 Write each fraction in its simplest form.
a 2 b 15 c 6 d 14 e 22 f 25
10 25 9 21 77 75

3 Write each fraction in its lowest terms.
a 4 b 12 c 9 d 24 e 24 f 15
6 30 27 40 36 18
4 Copy and complete the equivalent fractions in these spider diagrams.

20 20 6 6
60 60 30 30

a 8 8 2 2 b 3 3 33 33
3 3 15 15 25 25 5 5

14 14 9 9
9 9 45 45

5 Each fraction in a pink star has an equivalent fraction in a blue star.
a Match each pink star with the correct blue star.
There should be one blue star left over. Which is it?

75 2
100 11 1 10
20 20
4
2 1 10 5
5 5 55 100
100 3
6 3 5
10 4
64
100

b Cancel the fraction in the blue star that is left over to its lowest terms.
6 Harsha says:
3
I am thinking of a fraction that is equivalent to . The numerator
7
is bigger than 20. The denominator is smaller than 50.

What fraction is Harsha thinking of?
74 7 Fractions