Converting Fractions To Percentages, Converting Decimals To Percentages, Plotting Numbers On A Number Line Worksheet Page 5
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PERCENTAGE (Chapter 14)
B
CONVERTING FRACTIONS
TO PERCENTAGES
If an object is divided into 100 equal parts then each part is 1 percent and is written as 1%.
1
100
= 1%
= 100%
Thus
and
100
100
Most common fractions and decimal fractions can be changed into percentage form by first
converting into an equal fraction with a denominator of 100.
For example:
The shaded part of both squares is the same.
1
In the first square
is shaded.
5
=
20
In the second square
is shaded.
100
1
20
=
= 20%:
So,
5
100
EXERCISE 14B
1
What percentage is represented by the following shaded diagrams?
a
b
c
d
2
Estimate the percentage shaded:
a
b
c
0 10 20 30 40 50 60 70 80 90 100
0 10 20 30 40 50 60 70 80 90 100
0 10 20 30 40 50 60 70 80 90 100
3
a
Copy and complete:
=
=
=
%
100
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