3 out of 3
Use 4 four times in a calculation. What answers can you get?
3 out of 3
Nine squares with side lengths 1, 4, 7, 8, 9, 10, 14, 15, and 18 cm can be fitted together to form a rectangle. What are the dimensions of the rectangle?
3 out of 3
This problem challenges you to work out what fraction of the whole area of these pictures is taken up by various shapes.
3 out of 3
Can you order the digits from 1-3 to make a number which is divisible by 3 so when the last digit is removed it becomes a 2-figure number divisible by 2, and so on?
3 out of 3
Look at what happens when you take a number, square it and subtract your answer. What kind of number do you get? Can you prove it?
3 out of 3
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?
3 out of 3
What is the largest 'ribbon square' you can make? And the smallest? How many different squares can you make altogether?
If you'd like to explore the game freely, without any nudges from us, choose this version.
1 out of 3
Try out these calculations. Are you surprised by the results?
1 out of 3
How good are you at estimating angles?
