Uses multiplication for 2s, 5s, and 10s

You need to show evidence that you can solve these problems independently in the same way shown in these videos.

Could you show your teacher how to solve the problems below,

using the same strategy used in these videos?

Pens cost $2 each at the $2 Shop. Sophie bought 6 pens. How much did Sophie spend?

8 $5 notes blew away from Tanya's table as she was counting them. How much money blew away?