Do you remember how to add numbers together, like 3 and 4?
The image below shows one group of apples being added to another.
How many apples are there in total?
Let's see how 3, 4 and 7 are related and make a fact family.
Here is the fact family of 2, 5 and 7.
What is 2 + 5?
What is 7 - 5?
What is 7 - 2?
uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers