Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

How quickly can you put back the numbers on the hundred square? What's the smartest way to do it?

A task which depends on members of the group noticing the needs of others and responding.

Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.

You have two sets of the digits 0 – 9. Can you arrange these in the five boxes to make four-digit numbers as close to the target numbers as possible?

Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?

What happens when you add three numbers together? Will your answer be odd or even? How do you know?

This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?

Find out what a Deca Tree is and then work out how many leaves there will be after the woodcutter has cut off a trunk, a branch, a twig and a leaf.

Each child in Class 3 took four numbers out of the bag. Who had made the highest even number?

This activity involves rounding four-digit numbers to the nearest thousand.

Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?

Four of these clues are needed to find the chosen number on this grid and four are true but do nothing to help in finding the number. Can you sort out the clues and find the number?

Who said that adding, subtracting, multiplying and dividing couldn't be fun?

Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?

There are six numbers written in five different scripts. Can you sort out which is which?

There are nasty versions of this dice game but we'll start with the nice ones...

Some of the numbers have fallen off Becky's number line. Can you figure out what they were?

Who said that adding, subtracting, multiplying and dividing couldn't be fun?