1. Ratio

2. Ratio Ratio tells us the amounts of parts of a whole!
For example to make a drink of Vimto we use 1 part Vimto cordial and 4 parts water!
So for every 100 ml of Vimto cordial we need to add 400 ml of water!
We say that the ratio of cordial to water is 1 to 4!
Which we write as
1 : 4

3. Equivalent Ratios
As with fractions some ratios are the same as others ~ these are what we call equivalent ratios!
Orange : Yellow
2 : 1
For every 2 orange cars there is 1 yellow car!
Orange : Yellow
4 : 2
For every 4 orange cars there are 2 yellow cars!

4. 2:3 Equivalent Ratios 0.2 : ? 1 : ? ? : 30 ? : 21 ? : 12 10 : ? ? : 18
? : 6
? : 300
22 : ?
50 : ?
2:3

5. 4:5 Equivalent Ratios 80 : ? 44 : ? ? : 0.5 ? : 50 ? : 15 12 : ?
? : 20
? : 10
? : 30
28 : ?
400 : ?
4:5

6. Divide £18 in the above ratio
Dividing in a Ratio
Divide £18 in the above ratio
2:1 + =
£18 £6 £6 £6
£12 : £6

7. Divide £45 in the above ratio
Dividing in a Ratio
Divide £45 in the above ratio
3:2 + = £9 £9 £9 £9 £9
£45
£27 :
£18