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?
What about taking $$4 away from $$7?
Let's see how $$3, $$4 and $$7 are related and make a fact family.
Using the fact family of $$2, $$5, and $$7.
$$+ | $$= | |||
$$5 | $$+ | $$2 | $$= | $$7 |
What is $$2+5?
What is $$7−5?
What is $$7−2?
A fact family has three numbers that are connected in some way. In this case, they are connected by addition and subtraction.