2.01 Single digit fact families
Lesson
Are you ready?
Do you remember how to add numbers together, like $3$3 and $4$4?
The image below shows one group of apples being added to another.
How many apples are there in total?
What about taking $4$4 away from $7$7?
Learn
Let's see how $3$3, $4$4 and $7$7 are related and make a fact family.
Apply
Using the fact family of $2$2, $5$5, and $7$7.
 |
$+$+ |  |
$=$= |  |
| $5$5 | $+$+ | $2$2 | $=$= | $7$7 |
What is $2+5$2+5?
What is $7-5$7−5?
What is $7-2$7−2?
Remember!
A fact family has three numbers that are connected in some way. In this case, they are connected by addition and subtraction.
