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