# Lowest common multiple

## Lesson details

### Key learning points

1. In this lesson, we will learn to calculate the lowest common multiple through listing the multiples of a number.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
Which represents 24 as a product of prime factors?
=2 × 2 × 3× 3
2 × 2 × 2 × 2
Correct answer: 2 × 2 × 2 × 3
Q2.
What number should replace the square in the Venn diagram?
14
4
Q3.
What number should replace the square in the Venn diagram?1
2
6
Q4.
Using the Venn diagram, what is the HCF of 24 and 36?
24
7
Q5.
True or False? Sometimes there isn’t a highest common factor!
True

## Exit quiz

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### 5 Questions

Q1.
Find the lowest common multiple of 3 and 6
18
2
3
Q2.
Find the highest common factors of 3 and 6
18
2
6
Q3.
Find the LCM of 14 and 21
2 and 3
21
294
7
Q4.
A pair of numbers have LCM OF 24. What could the pair of numbers be?
12 and 2
24 and 48
6 and 4