Watch: Adding two numbers together
Addition
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
You might find it easier to start with the bigger number and add the smaller one.
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
Activity 1
Karate Cats Maths game. game
Train with the Karate Cats to become an expert in addition and subtraction, multiplication and division, place value and more!
More on Adding and subtracting
Find out more by working through a topic
- count13 of 14
- count14 of 14
- count1 of 14
- count2 of 14