Lowest Common Multiples (2)

In this worksheet, students state the lowest common multiple of two numbers.

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Factors and Multiples

Difficulty level:

QUESTION 1 of 10

The multiples of 10 are 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120 etc.....

The multiples of 15 are 15, 30, 45, 60, 75, 90, 105, 120, 135 etc......

Some of these multiples appear in both lists and these are the common multiples of 10 and 15.  They are:

30, 60, 90, 120 etc...

This list will go on forever but 30 is the smallest

or the Lowest Common Multiple (LCM) of 10 and 15.

What is the lowest common multiple of....?

2 and 12

What is the lowest common multiple of....?

6 and 12

What is the lowest common multiple of....?

6 and 9

What is the lowest common multiple of....?

6 and 15

What is the lowest common multiple of....?

8 and 6

What is the lowest common multiple of....?

12 and 15

What is the lowest common multiple of....?

16 and 6

What is the lowest common multiple of....?

25 and 10

What is the lowest common multiple of....?

24 and 16

What is the lowest common multiple of....?

24 and 36

• Question 1

What is the lowest common multiple of....?

2 and 12

12
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 2, 4, 6, 8, 10, 12, 14, 16, 18, 20... 12, 24, 36 ...
• Question 2

What is the lowest common multiple of....?

6 and 12

12
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 6, 12, 18, 24, 30, ... 12, 24, 36 ...
• Question 3

What is the lowest common multiple of....?

6 and 9

18
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 6, 12, 18, 24, 30, 36, 42, 48, 54, 60 9, 18, 27, 36, 45, 54, 63
• Question 4

What is the lowest common multiple of....?

6 and 15

30
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 6, 12, 18, 24, 30, 36, 42, 48, 54, 60... 15, 30, 45...
• Question 5

What is the lowest common multiple of....?

8 and 6

24
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 8, 16, 24, 32, 40, 48, 56, 64, 72, 80... 6, 12, 18, 24, 30, 36, 42, 48, 60...
• Question 6

What is the lowest common multiple of....?

12 and 15

60
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 12, 24, 36, 48, 60, 72, 84... 15, 30, 45, 60, 75...
• Question 7

What is the lowest common multiple of....?

16 and 6

48
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 16, 32, 48, 64, 80... 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66
• Question 8

What is the lowest common multiple of....?

25 and 10

50
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 25, 50, 75, 100... 10, 20, 30, 40, 50, 60, 70, 80, 90, 100...
• Question 9

What is the lowest common multiple of....?

24 and 16

48
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 24, 48, 72, 96, 120... 16, 32, 48, 64, 80
• Question 10

What is the lowest common multiple of....?

24 and 36

72
EDDIE SAYS
The easiest way to complete this is to write out the multiples of each number and find the lowest number that appears in both. 24, 48, 72, 96, 120... 36, 72, 108...
---- OR ----

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