In this activity, we will work out how much change needs to be given when we pay for something with a £1 coin.

£1 = 100p

Example

How much change is given from £1 when I pay for something costing 72p?

Answer

The number sentence for working this out is £1 - 72p = ?, as we have a pound and we take away 72 from this pound. 

Remember that £1 is 100p, so the subtraction will be: 100 - 72

The best way to work this out is to find the difference, so, instead of taking it away, we count up from 72p to £1. 

Shopkeepers count on from 72p as in the diagram.

That makes 28p change.

There is often more than one way to work out the answer to a problem in maths. The important thing is to find the way that works best for you.

Are you ready to have a go?