Ratio · Grade 6
In Grade 6 you learn: comparing quantities with ratio.
A ratio compares the sizes of two or more quantities: 3 : 5 means “for every 3 of the first there are 5 of the second”. Ratios are used in recipes, maps, mixing paint and sharing money fairly.
Key facts
- A map scale of 1 : 25,000 means 1 cm on the map is 25,000 cm (250 m) in real life.