1. Expressing Quantities as a Percentage.
Stage 4 -Year 7
Percentages
Expressing Quantities as a Percentage.
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2. Expressing Quantities as Percentage (1/1)
To express one quantity as a percentage of another.
1. Write them as a fraction.
2. Convert them to a percentage.
Write 11g of 20g as a percentage. 5 11 20
100 1
100% x
= 55% 1
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3. Expressing Quantities as Percentage (2/1)
To express one quantity as a percentage of another.
1. Write them as a fraction.
2. Convert them to a percentage.
Write 50 millilitre of 1 litre as a percentage. 50
1000
100%
100 1 x
= 5%
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