Estimate first and check afterwards.
It's a good idea to estimate a rough answer first. And always check your actual answer.
Multiplication and division are opposites.
For example, 8 x 6 = 48 and 48 ÷ 6 = 8.
The order in which you multiply numbers doesn't matter.
28 x 4 x 16 is just the same as 4 x 16 x 28.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.