# Common multiples

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## Lesson details

### Key learning points

1. In this lesson, we will be looking at how to find common multiples of numbers.

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## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
Which of these is not a factor of 24?
2
4
8
Q2.
Why can't factors of 1 and 2 be represented as polygons?
Correct answer: Because the smallest sized polygon has 3 sides
Because there are not enough dots
Because they are no factors of numbers
Q3.
How many factor polygons can you draw for a ring of 32 dots?
5
6
7
Q4.
How many polygons can you draw for a ring of 20 dots?
3
5
6
Q5.
What is a regular polygon?
Correct answer: A polygon with all equal sides
A polygon with different length sides

## Exit quiz

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### 5 Questions

Q1.
Which of these numbers is a common multiple of 2 and 3?
14
8
9
Q2.
What is the lowest common multiple of 4 and 5?
15
16
40
Q3.
Which of these numbers is both a multiple of 4 and a factor of 100?
16
32
80
Q4.
Which of these numbers is a multiple of a square number that is not 1?
14
15
22
Q5.
What is the lowest common multiple of 2, 3, and 5?
15
20
60