Lesson

We've seen how multiplying by $2$2 helps us multiply by $4$4, and then by $8$8. Let's try this problem to help us remember.

$6\times8$6×8

What if we could use things we already know to solve multiplication or division? We can! Let's see how.

If $2\times8=16$2×8=16, what is $20\times8$20×8?

Remember!

For every multiplication problem we know, there's another one we also know! If we know our $3$3 times tables, including $3$3 × $7$7= 21, then we know that $7$7 × $3$3= $21$21.

Investigate number sequences involving multiples of 3, 4, 6, 7, 8, and 9

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

Explore and describe number patterns resulting from performing multiplication