# Ratio

## Contents

## Key Stage 3

### Meaning

A ratio is a comparison between two numbers.

### About Ratio

- A ratio gives information about how much bigger one quantity is than another.

## Key Stage 4

### Meaning

A ratio is a comparison between two numbers.

### About Ratio

- A ratio gives information about how much bigger one quantity is than another.

### References

#### AQA

*Ratio (maths skill), pages 134-5, GCSE Physics; Student Book, Collins, AQA**Ratio (maths), page 264-5, GCSE Biology; Student Book, Collins, AQA**Ratio (maths), pages 316-7, GCSE Chemistry; Student Book, Collins, AQA**Ratios, page 242, GCSE Combined Science Trilogy; Chemistry, CGP, AQA**Ratios, page 254, GCSE Physics; Third Edition, Oxford University Press, AQA**Ratios, page 297, GCSE Combined Science Trilogy; Biology, CGP, AQA**Ratios, page 320, GCSE Chemistry, CGP, AQA**Ratios, page 377, GCSE Biology, CGP, AQA**Ratios, pages 238, 239, GCSE Combined Science Trilogy; Physics, CGP, AQA**Ratios, pages 334, 335, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA*

#### Edexcel

*Ratios, page 328, GCSE Chemistry, CGP, Edexcel**Ratios, page 342, GCSE Physics, CGP, Edexcel**Ratios, pages 255-257, 325, GCSE Biology, CGP, Edexcel*