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Factors and Prime Factors (2)

In this worksheet, students identify factors and prime factors of the given numbers.

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'Factors and Prime Factors (2)' worksheet

Key stage:  KS 2

Year:  Year 3 11+ worksheets

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Special Numbers

Difficulty level:  

Worksheet Overview

A FACTOR is a number that divides exactly into another number.

A PRIME number is one that only has two factors, itself and 1.


A PRIME FACTOR is a factor that also happens to be a prime number.




The number 42 has factors 42, 21, 14, 7, 6, 3, 2 and 1.

Which of these are PRIME FACTORS?



The only prime numbers in this list are 2, 3 and 7.

Remember that 1 is not a prime number.


So the PRIME FACTORS of 42 are 2, 3 and 7.

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