Exploring and noticing

This big box multiplies anything that goes inside it by the same number. If you know the numbers that come out, what multiplication might be going on in the box?

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?

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

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?

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...

Choose a symbol to put into the number sentence.

You are organising a school trip and you need to write a letter to parents to let them know about the day. Use the cards to gather all the information you need.

What happens when you add the digits of a number then multiply the result by 2 and you keep doing this? You could try for different numbers and different rules.

What can you say about these shapes? This problem challenges you to create shapes with different areas and perimeters.