How_To_Be_Good_At_Math

NUMBERS • PERCENTAGES 65

Percentages, decimals,

and fractions

We can use a percentage, decimal,

and fraction to write the same number.

Some of the most common percentages

are listed below, together with the decimal

and fraction equivalents. You can find out

more on pages 74-75.

PERCENTAGE DECIMAL FRACTION

1% 0.01

5% 0.05

10% 0.1

20% 0.2

25% 0.25

50%

100%

75%

0.5

1

0.75

Shaded parts

These grids have 100 squares.

What percentage is shaded dark

purple in each grid?

TRY IT OUT

Answers on page 319

1

100

5

100

1

10

1 5 1 4 1 2 3 4

100

100

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