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What is a ratio?
Mind map: what is a ratio
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What is a ratio?
A ratio is used to compare two or more quantities. The symbol for ratio is two dots (:).
For example, 12 red apples compared to 20 green apples is written as 12 : 20
To put ratios in their simplest form, divide both parts of the ratio by the highest common factor. (HCF)
- For example: 12 : 20 (divide both parts by 4) = 3 : 5
- To express the ratio 3 : 5 in the ratio 1 : n, divide both sides by 3.
- 3 : 5 =3/3 : 5/3 = 1 : 1 - 2/3 Or 1 : 1.6666....
- To express the ratio 3 : 5 in the ratio 1 : n, divide both sides by 3.
- For example: 12 : 20 (divide both parts by 4) = 3 : 5
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- Maths (Number) Mind Map on What is a ratio?, created by abbylebus on 13/05/2013.
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