You may also like

problem icon


There are to be 6 homes built on a new development site. They could be semi-detached, detached or terraced houses. How many different combinations of these can you find?

problem icon

Number Squares

Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?

problem icon

I'm Eight

Find a great variety of ways of asking questions which make 8.

Fair Exchange

Stage: 1 Challenge Level: Challenge Level:1

In your bank, you have three types of coins. The number of spots shows how much they are worth.

Coin with one spot. Coin with two spots. Coin with three spots.
1 2 5

Can you choose coins to exchange with the groups below to make the same total?

Full screen version

If you can see this message Flash may not be working in your browser
Please see to enable it.

Can you find another way to do each one?