Drag the jigsaw pieces onto the frame so that the numbers are in order from smallest to largest. The composite numbers are hidden.
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Level 1  6 by 5 grid of prime numbers starting at 1
Level 2  6 by 6 grid of prime numbers starting at a number between 3 and 9
Level 3  7 by 7 grid of prime numbers starting at a number between 33 and 49
Level 4  8 by 7 grid of prime numbers starting at a number between 70 and 88
Level 5  6 by 5 grid of numbers (composites hidden) starting at 1
Level 6  6 by 6 grid of numbers (composites hidden) starting at a number between 3 and 9
Level 7  7 by 7 grid of numbers (composites hidden) starting at a number between 33 and 49
Level 8  8 by 7 grid of numbers (composites hidden) starting at a number between 70 and 88
Level 9  8 by 8 grid of numbers (composites hidden) starting at a number between 450 and 470
Level 10  8 by 8 grid of numbers (composites hidden) starting at a number between 599 and 900
Note that the higher levels are quite a challenge because they include a range of numbers in which the prime numbers are more spaced out. You will get jigsaw pieces that contain only hidden composite numbers but you still have to correctly guess the intended positions of these pieces. It is not sufficient to fit all the pieces on the rectangle with no gaps; all the pieces need to be in the position I designed for them!
Roman Numerals Jigsaw  If you enjoyed this jigsaw there are others you can try.
Note that the higher levels are quite a challenge because they include a range of numbers in which the prime numbers are more spaced out. You will get jigsaw pieces that contain only hidden composite numbers but you still have to correctly guess the intended positions of these pieces. It is not sufficient to fit all the pieces on the rectangle with no gaps; all the pieces need to be in the position I designed for them!
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
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Numeracy"Numeracy is a proficiency which is developed mainly in Mathematics but also in other subjects. It is more than an ability to do basic arithmetic. It involves developing confidence and competence with numbers and measures. It requires understanding of the number system, a repertoire of mathematical techniques, and an inclination and ability to solve quantitative or spatial problems in a range of contexts. Numeracy also demands understanding of the ways in which data are gathered by counting and measuring, and presented in graphs, diagrams, charts and tables." Secondary National Strategy, Mathematics at key stage 3 

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