# Spot Factor Pairs

In this worksheet, students must identify the factor pairs for the given number.

Key stage:  KS 2

Curriculum topic:   Number: Multiplication and Division

Curriculum subtopic:   Recognise/Use Pairs in Mental Calculation

Difficulty level:

### QUESTION 1 of 10

Two whole numbers that multiply together to give a number are a factor pair of that given number.

2 and 6 are a factor pair of 12 because 2 × 6 = 12.

But 12 has other factor pairs too.

3 and 4 are a factor pair of 12 because 3 × 4 = 12.

1 and 12 are the simplest factor pair because 1 × 12 = 12.

This means that:

12 =

1 × 12  and 12 × 1

2 × 6  and 6 × 2

3 × 4  and 4 × 3

Example

Which of these are a factor pair of 64?

3 and 18 or 4 and 16.

3 × 18 = 54

4 × 16 = 64

So 4 and 16 are a factor pair of 64.

Want to understand this further and learn how this links to other topics in maths?
Why not watch this video?

Tick all the factor pairs of:

8

1 and 8

2 and 6

4 and 4

2 and 4

3 and 5

6 and 2

Tick all the factor pairs of:

10

1 and 9

2 and 5

4 and 6

2 and 4

1 and 10

6 and 4

Tick all the factor pairs of:

18

2 and 9

2 and 12

3 and 6

2 and 8

1 and 18

6 and 12

Tick all the factor pairs of:

20

2 and 9

2 and 10

4 and 5

2 and 8

1 and 19

20 and 1

Tick all the factor pairs of:

25

2 and 5

2 and 10

5 and 5

2 and 23

1 and 25

20 and 1

Tick all the factor pairs of:

31

2 and 15

3 and 11

1 and 30

11 and 21

1 and 31

3 and 1

Tick all the factor pairs of:

56

2 and 28

4 and 14

5 and 6

2 and 23

1 and 56

8 and 7

Tick all the factor pairs of:

63

1 and 63

2 and 32

3 and 21

6 and 3

60 and 3

9 and 7

Tick all the factor pairs of:

45

1 and 44

1 and 45

3 and 15

5 and 9

9 and 3

4 and 5

Tick all the factor pairs of:

108

1 and 108

9 and 12

2 and 54

3 and 36

4 and 27

6 and 18

• Question 1

Tick all the factor pairs of:

8

1 and 8
2 and 4
EDDIE SAYS
8 = 1 × 8 = 2 × 4
• Question 2

Tick all the factor pairs of:

10

2 and 5
1 and 10
EDDIE SAYS
10 = 1 × 10 = 2 × 5
• Question 3

Tick all the factor pairs of:

18

2 and 9
3 and 6
1 and 18
EDDIE SAYS
18 = 1 × 18 = 2 × 9 = 3 × 6
• Question 4

Tick all the factor pairs of:

20

2 and 10
4 and 5
20 and 1
EDDIE SAYS
20 = 1 × 20 = 2 × 10 = 4 × 5
• Question 5

Tick all the factor pairs of:

25

5 and 5
1 and 25
EDDIE SAYS
25 = 1 × 25 = 5 × 5
• Question 6

Tick all the factor pairs of:

31

1 and 31
EDDIE SAYS
31 = 1 × 31
• Question 7

Tick all the factor pairs of:

56

2 and 28
4 and 14
1 and 56
8 and 7
EDDIE SAYS
56 = 1 × 56 = 2 × 28 = 4 × 14 = 8 × 7
• Question 8

Tick all the factor pairs of:

63

1 and 63
3 and 21
9 and 7
EDDIE SAYS
63 = 3 × 21 = 7 × 9
• Question 9

Tick all the factor pairs of:

45

1 and 45
3 and 15
5 and 9
EDDIE SAYS
45 = 1 × 45 = 3 × 15 = 5 × 9
• Question 10

Tick all the factor pairs of:

108

1 and 108
9 and 12
2 and 54
3 and 36
4 and 27
6 and 18
EDDIE SAYS
108 = 1 × 108 = 2 × 54 = 3 × 36 = 4 × 27 = 6 × 18 = 9 × 12
---- OR ----

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