Use a Subtraction Fact to Find Other Number Facts

In this activity, we will be learning about three more facts that you can get from just one subtraction fact.

Example:

We know that 7,049 - 2,143 = 4,906

So, we can write three more facts about these numbers.

7,049 - 4,906 = 2,143
4,906 + 2,143 = 7,049
2,143 + 4,906 = 7,049

Here is an easier example:

If we know that 100 - 30 = 70, then we can also work out the following:

100 - 70 = 30

70 + 30 = 100

30 + 70 = 100

Let's practise spotting these addition and subtraction facts in the questions that follow!