Try entering different sets of numbers in the number pyramids. How does the total at the top change?

Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?

Can you find a way to identify times tables after they have been shifted up or down?

Follow this recipe for sieving numbers and see what interesting patterns emerge.

I'm thinking of a rectangle with an area of 24. What could its perimeter be?

Can you figure out how sequences of beach huts are generated?

By selecting digits for an addition grid, what targets can you make?

In the 2020 Olympic Games, sport climbing was introduced for the first time, and something very interesting happened with the scoring system. Can you find out what was interesting about it?

When number pyramids have a sequence on the bottom layer, some interesting patterns emerge...

If you move the tiles around, can you make squares with different coloured edges?