An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting.

How could you estimate the number of pencils/pens in these pictures?

Buzzy Bee was building a honeycomb. She decorated the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?

Here is a picnic that Petros and Michael are going to share equally. Can you tell us what each of them will have?

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

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

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?

How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?

In this problem it is not the squares that jump, you do the jumping! The idea is to go round the track in as few jumps as possible.

Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?

Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?

Can you use the information to find out which cards I have used?

Tom and Ben visited Numberland. Use the maps to work out the number of points each of their routes scores.

How many different shaped boxes can you design for 36 sweets in one layer? Can you arrange the sweets so that no sweets of the same colour are next to each other in any direction?

Put operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number.

The value of the circle changes in each of the following problems. Can you discover its value in each problem?

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?

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

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