BACK TO WORKSHEETSPrime numbers only have two factors, 1 and the number itself.
All other whole numbers are known as composite.
The only even prime number is 2.
The list of prime numbers starts as follows:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37........
In this worksheet, students revise and practise deciding whether or not a given number is prime.
Key stage: KS 2
Year: Year 5 11+ worksheets
Curriculum topic: Maths and Numerical Reasoning
Curriculum subtopic: Special Numbers
Difficulty level: 
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