# Fact families - addition facts

## Learning focus

Find out about number facts and the connection between addition and subtraction.

This lesson includes:

• a quiz
• two videos
• one interactive activity

# Quiz

To get started, let's see how well you know this topic already. Take the catch-up quiz below to find out.

# Learn

When you add two numbers together, which way around should they go? Watch this video from 1st Level Maths and Numeracy to find out.

It doesn't matter which way round you add numbers. The answer is always the same.

1 + 2 will always be the same as 2 + 1

## Top tip

7 + 2 might be easier if you turn it round to 2 + 7.

2 + 7 = 9

7 + 2 = 9

Try it yourself. What works for you?

## Subtraction

We know that 2 + 7 = 9. With this information we can move the numbers around again to make more number facts.

7 - 2 = 5

9 - 7 = 2

## Fact families

A fact family is a group of calculations that are created using the same three numbers. For example, here is a fact family that uses the numbers 2 , 4 and 6.

2 + 4 = 6

4 + 2 = 6

6 - 2 = 4

6 - 4 = 2

# Play

Play the Addition and Subtraction levels of Karate Cats Maths to test your skills on fact families and more!

# There's more to learn

Have a look at these other resources.