Can you find the values at the vertices when you know the values on the edges of these multiplication arithmagons?

Where should you start, if you want to finish back where you started?

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

Play around with sets of five numbers and see what you can discover about different types of average...

Can you do a little mathematical detective work to figure out which number has been wiped out?

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

How well can you estimate 10 seconds? Investigate with our timing tool.

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

Is there a relationship between the coordinates of the endpoints of a line and the number of grid squares it crosses?