Do you ever really look at the bottom of your supermarket receipts?

This caught my eye today:

The bill is broken down into three bands of tax, the relevant amounts, VAT and total amount payable.

It would be quite an easy task to enlarge a receipt on a photocopier and blank out quantities. Don’t forget to blank out financial transaction details. You could work out percentages of amounts, reverse percentages or find missing percentages. It could be extended to percentage increase using multipliers. It also links to decimal calculations, rounding and money.

All this learning from a bit of paper from the supermarket*.

*Not all supermarkets do this, but there is usually some kind of tax reference.