1. Understand that ratios can be simplified in the same way as fractions.

2. Use ratios directly to find 'parts' in a drink, a mix of cement etc.

3. Use 'recipes' or 'menus' to convert amounts given for 4 people to 6, 8, etc.

4. To understand that the scale on a map is a ratio - to convert from the map to real life and backwards.

EXAMPLES

1. A worksheet showing how to cancel fractions will be given.

2. Ratio is given

*A boy mixes a drink one part of squash to three parts of water. How much squash will he need for 2 litres of the drink?*

**Method**

a. Draw a bottle - label the two different components

You have

1 part of squash

3 parts of water

________________

4 parts altogether

b. Find out what each part is worth

Divide 2 litres by 4

Change 2 litres into 2000 millilitres

c. The answer is 1 part is worth 2000/4 = 500ml

d. Draw in your diagram squash =500ml (1 part), water =1500ml (3 parts)

The Skillwise worksheets help.