You have a set of the digits from 0 – 9. Can you arrange these in the 5 boxes to make two-digit numbers as close to the targets as possible?
Exploring the structure of a number square: how quickly can you put the number tiles in the right place on the grid?
There are six numbers written in five different scripts. Can you sort out which is which?
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?