Lesson

Can you solve this multiplication by doubling?

Double $9$9.

Let's look at the relationship between the 2, 4 and 8 times tables.

$6\times8$6×8

Remember!

- $\times2$×2 means "double the number."
- $\times4$×4 means "double the number, then double the answer."
- $\times8$×8 means "double the number, double the answer, then double the answer again."

Recall multiplication facts up to 10 × 10 and related division facts