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.

When we add the same number more than once, we can think of it as multiplication, as we see in this video.

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

Interpret products of whole numbers, such as, interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.