6. Multiplication and division
6.02 Repeated addition
Lesson
Are you ready?
Let's try this problem to help us remember how to double a number.
Double $9$9.
Learn
When we add the same number more than once, we can think of it as multiplication, as we see in this video.
Apply
Write this addition as a multiplication.
$3+3+3+3$3+3+3+3
Remember!
If we are adding groups of the same size, we can also write it as a multiplication:
Number of groups$\times$×Amount in each group