This activity is about adding three numbers to find a total.

Example

40 sweets

29 sweets

21 sweets

How many sweets are there altogether?

Answer

We can work out 40 + 29 + 21  on the number line below.

We start at 40 and move forward 29 to 69, then we move forward 21 to get to 90.

The answer is 90 sweets

There are many ways of adding numbers, but we are going to practise this method in the following questions. 

Are you ready to have a go?