Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments.

The solutions to this and other Transum puzzles, exercises and activities are available here when you are signed in to your Transum subscription account. If you do not yet have an account and you are a teacher, tutor or parent you can apply for one by completing the form on the Sign Up page.

A Transum subscription also gives you access to the 'Class Admin' student management system, downloadable worksheets, many more teaching resources and opens up ad-free access to the Transum website for you and your pupils.

This puzzle provides pupils with practice recognising prime numbers. If pupils have access to a calculator they may need to devise a procedure for checking whether a number is prime or not. It is expected that the pupils doing this activity will begin to recognise the first 25 prime numbers represented here. It's probably a good idea to do the Prime Numbers Jigsaw before attempting this activity.