Addition and subtraction

Susie took cherries out of a bowl by following a certain pattern. How many cherries had there been in the bowl to start with if she was left with 14 single ones?

Arrange these three famous mathematicians in order with the shortest-lived first.

This task, written for the National Young Mathematicians' Award 2016, invites you to explore the different combinations of scores that you might get on these dart boards.

This task, written for the National Young Mathematicians' Award 2016, involves open-topped boxes made with interlocking cubes. Explore the number of units of paint that are needed to cover the boxes and the small cubes that would fit inside each one.

This task, written for the National Young Mathematicians' Award 2016, focuses on 'open squares'. What would the next five open squares look like?

Can you find different ways of creating paths using these paving slabs?

Investigate the totals you get when adding numbers in threes on the diagonal of this pattern.

This task follows on from Build it Up and takes the ideas into three dimensions!