Fractions Worksheet Page 22
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36Fractions
You already know how to divide by 100 using decimals. You
See Chapter 1, Section 1.5.
move the digits 2 places to the right.
You can use this to change a percentage to a decimal.
78
means 78 4 100
78
78% 5
5 0.78
100
100
To change a percentage to a decimal:
1 Write it as a fraction with a denominator of 100.
2 Divide the numerator by 100 (move the digits 2 places
to the right).
18
EXAMPLE
Change these percentages to decimals.
(a) 43%
(b) 7%
43
(a) 43% 5
5 0.43
100
7
(b) 7% 5
5 0.07
100
3
EXERCISE
L
1 Write these percentages as fractions in their simplest
form.
(a) 50%
(b) 20%
(c) 40%
(d) 10%
(e) 18%
(f) 26%
(g) 38%
(h) 16%
(i) 25%
(j) 36%
(k) 65%
(l) 96%
2 Copy and complete each of these.
%
%
(a) 2
1
(b) 3
1
(c) 17
1
7
% =
% =
% =
%
2
40
3
30
2
(d) 3
3
3
(e) 11
2
7
(f) 37
1
3
% =
% =
% =
%
%
%
4
3
2
%
%
%
(g) 5
5
(h) 14
2
(i) 9
3
% =
% =
% =
8
160
7
7
8
32
3 Copy and complete with the correct sign, ,, . or 5.
(a) 75% %
(b) 15% %
(c) 56% %
3
1
13
4
20
25
(d) 84% %
% %
% %
19
(b) 7
1
7
(e) 66
2
2
25
2
40
3
3
Number 81
M03_CMC_SB_IGCSE_6850_U03.indd 81
9/6/09 16:45:18
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