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iGCSE (2021 Edition)

3.03 Converting between fractions and decimals

Worksheet
Convert fractions to decimals
1

Write the number "fifty three hundredths" as a decimal.

2

Consider the following diagram:

a

What fraction of the row of blocks is shaded?

b

Write this fraction as a decimal.

c

What fraction of the row of blocks is not shaded?

d

Write this fraction as a decimal.

3

Consider the following diagram:

a

What fraction of the grid is shaded?

b

Write this fraction as a decimal.

c

What fraction of the grid is not shaded?

d

Write this fraction as a decimal.

4

Write the following fractions as decimals:

a

\dfrac{1}{10}

b

\dfrac{2}{10}

c

\dfrac{7}{10}

d

\dfrac{1}{100}

e

\dfrac{47}{100}

f

\dfrac{93}{100}

g

\dfrac{1}{1000}

h

\dfrac{6}{1000}

i

\dfrac{68}{1000}

j

\dfrac{111}{1000}

k

\dfrac{747}{1000}

l

\dfrac{954}{1000}

m

\dfrac{13}{10}

n

\dfrac{94}{10}

o

\dfrac{698}{100}

p

\dfrac{5527}{1000}

5

Write the following mixed numbers as decimals:

a

1\dfrac{1}{10}

b

9\dfrac{3}{10}

c

9\dfrac{65}{100}

d

7\dfrac{3}{25}

6

Complete the following conversion tables:

a
Fraction\dfrac{1}{10}\dfrac{1}{100}\dfrac{1}{1000}
Decimal0.1
b
Fraction\dfrac{1}{2}\dfrac{1}{4}\dfrac{3}{4}
Decimal0.5
c
Fraction\dfrac{1}{5}\dfrac{1}{20}\dfrac{1}{50}
Decimal
d
Fraction\dfrac{2}{5}\dfrac{3}{10}\dfrac{7}{50}
Decimal
7

Write the following fractions as decimals:

a

\dfrac{6}{12}

b

\dfrac{2}{5}

c

\dfrac{23}{50}

d

\dfrac{17}{25}

e

\dfrac{7}{20}

f

\dfrac{146}{200}

g

\dfrac{358}{500}

h

\dfrac{9}{4}

i

\dfrac{3}{2}

j

\dfrac{25}{20}

k

\dfrac{62}{50}

l

\dfrac{217}{25}

Convert decimals to fractions
8

For each of the following, fill in the boxes with the missing numbers:

a
0.8 = \dfrac{ ⬚ }{10}=\dfrac{⬚}{5}
b
0.75 = \dfrac{ ⬚ }{100}=\dfrac{⬚}{4}
c
0.68 = \dfrac{ ⬚ }{100}=\dfrac{⬚}{25}
d
2.2 = 2\dfrac{ ⬚ }{10}=2\dfrac{⬚}{5}
e
0.225 = \dfrac{ ⬚ }{1000}=\dfrac{⬚}{40}
f
3.035 = 3\dfrac{ ⬚ }{1000}=3\dfrac{⬚}{200}
9

Write the following decimals as a simplified fraction. Express your answer in mixed form when necessary.

a

0.9

b

0.4

c

0.29

d

0.92

e

0.09

f

0.907

g

0.535

h

1.9

i

5.8

j

7.19

k

5.62

l

4.09

m

9.007

n

3.065

o

76.25

p

223.205

10
a

If 0.2 of a row of blocks is shaded, find the decimal number that represents the unshaded part of the row.

b

Write the fraction that is unshaded in simplest form.

11
a

If 0.72 of a grid is shaded, find the decimal number that represents the unshaded part of the grid.

b

Write the fraction that is unshaded in simplest form.

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Outcomes

0580C1.1E

Identify and use rational and irrational numbers (e.g. π, sqrt(2) ).

0580C1.5C

Recognise equivalence and convert between fractions, decimals and percentages.

0580E1.1E

Identify and use rational and irrational numbers (e.g. π, sqrt(2) ).

0580E1.5C

Recognise equivalence and convert between fractions, decimals and percentages.

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