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Factors and Prime Factors (1)

In this worksheet, students must complete the sentences using the correct vocabulary. Prime Numbers, Prime Factors and Composite Numbers should be understood.

'Factors and Prime Factors (1)' worksheet

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Factors and Multiples

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

You should understand the words:

PRIME NUMBER, COMPOSITE NUMBER, PRIME FACTOR and FACTOR.

 

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

A COMPOSITE number is one that has more than two factors.

 

PRIME numbers include 2, 3, 5, 7, 11, 13, 17 etc....

COMPOSITE numbers include 4, 6, 8, 9, 10, 12, 14, 15 etc....

 

 

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.

 

 

Examples

23 is a PRIME NUMBER because is only has FACTORS of 23 and 1.

 

24 is a COMPOSITE NUMBER because it has more than 2 factors. For example, 12 and 2 are factors as well as 24 and 1.

 

7 is a PRIME FACTOR of 21 because it is a factor of 21 and it is a PRIME NUMBER.

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