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Highest Common Factors (3)

In this worksheet, children must state the highest common factor of two numbers.

'Highest Common Factors (3)' worksheet

Key stage:  KS 2

Curriculum topic:  Maths and Numerical Reasoning

Curriculum subtopic:  Factors and Multiples

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

The factors of 42 are 1, 2, 3, 6, 7, 14, 21 and 42.

The factors of 28 are 1, 2, 4, 7, 14 and 28.

 

Some of these factors appear in both lists and these are the common factors of 42 and 28. 

They are:

1, 2, 7 and 14

 

But 14 is the greatest

or the Highest Common Factor (HCF) of 42 and 28.

What is the highest common factor of....?

42 and 36

What is the highest common factor of....?

60 and 36

What is the highest common factor of....?

30 and 60

What is the highest common factor of....?

28 and 42

What is the highest common factor of....?

31 and 45

What is the highest common factor of....?

16 and 24

What is the highest common factor of....?

42 and 56

What is the highest common factor of....?

63 and 108

What is the highest common factor of....?

48 and 72

What is the highest common factor of....?

69 and 115

  • Question 1

What is the highest common factor of....?

42 and 36

CORRECT ANSWER
6
  • Question 2

What is the highest common factor of....?

60 and 36

CORRECT ANSWER
12
  • Question 3

What is the highest common factor of....?

30 and 60

CORRECT ANSWER
30
  • Question 4

What is the highest common factor of....?

28 and 42

CORRECT ANSWER
14
  • Question 5

What is the highest common factor of....?

31 and 45

CORRECT ANSWER
1
  • Question 6

What is the highest common factor of....?

16 and 24

CORRECT ANSWER
8
  • Question 7

What is the highest common factor of....?

42 and 56

CORRECT ANSWER
14
  • Question 8

What is the highest common factor of....?

63 and 108

CORRECT ANSWER
9
  • Question 9

What is the highest common factor of....?

48 and 72

CORRECT ANSWER
24
  • Question 10

What is the highest common factor of....?

69 and 115

CORRECT ANSWER
23
---- OR ----

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