# Explain how to identify a prime factor of a number

I can explain how to identify a prime factor of a number.

# Explain how to identify a prime factor of a number

I can explain how to identify a prime factor of a number.

## Slide deck

## Lesson details

### Key learning points

- All numbers can be written as a product of 2 or more prime numbers.
- A prime factor is a factor of a number which is prime.

### Common misconception

Pupils try to compose numbers additively using prime factors.

Ensure pupils are confident with finding the factors of a number first before extending to finding prime factors of known factors. Give time to building numbers with prime factors in arrays to help emphasise their multiplicative composition.

### Keywords

Factor - A factor is a whole number which exactly divides another whole number.

Prime factor - A prime factor is a factor of a number that is a prime number.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

## Starter quiz

### 6 Questions

3

6

4

100

12

60

64