Addition and subtraction

What is the largest number you can make using the three digits 2, 3 and 4 in any way you like, using any operations you like? You can only use each digit once.

Three dice are placed in a row. Find a way to turn each one so that the three numbers on top of the dice total the same as the three numbers on the front of the dice. Can you find all the ways to do this?

Find your way through the grid starting at 2 and following these operations. What number do you end on?

This Sudoku, based on differences. Using the one clue number can you find the solution?

Can you solve this magic square?

How would you count the number of fingers in these pictures?

These two group activities use mathematical reasoning - one is numerical, one geometric.

Write the numbers up to 64 in an interesting way so that the shape they make at the end is interesting, different, more exciting ... than just a square.

In this section from a calendar, put a square box around the 1st, 2nd, 8th and 9th. Add all the pairs of numbers. What do you notice about the answers?