Mathematics.
Mr Hassey has $1.50. He wants to buy a Freddo Frog (a chocolate bar) for 65 cents. How much change does he get?
First the students will need to work out the change (using regrouping), so:
150 is the 14(10) is the (14) (10)
- 65 same as - 6 5 same as 6 5
5 8 5
The student would then have to give me the correct change using our money box! They got a prize ticket if they used the smallest amount of coins for the change as well (nobody likes to get 85 cents worth of pennies as change!)