Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
Can you work out how these polygon pictures were drawn, and use that to figure out their angles?
Take an equilateral triangle and cut it into smaller pieces. What can you do with them?
Is there a quick way to work out whether a fraction terminates or recurs when you write it as a decimal?
Can you find the pairs that represent the same amount of money?
What do you notice about these families of recurring decimals?
Can you express every recurring decimal as a fraction?
Pick two rods of different colours. Given an unlimited supply of rods of each of the two colours, how can we work out what fraction the shorter rod is of the longer one?
Using only the red and white rods, how many different ways are there to make up the other rods?
How many different lengths is it possible to measure with a set of three rods?
If you have a large supply of 3kg and 8kg weights, how many of each would you need for the average (mean) of the weights to be 6kg?