Doubling and Halving in Multiplication

Tips and Tricks for Multiplication

Hopefully you are working on developing your multiplication skills. It is critical that you are proficient in them going forward. Here is a strategy that can help you when you are having difficulty.

I need to do 6 x 8 but I don't know it:

but I do know 6 x 4 = 24 since 4 is half of 8 I can double 24 which gives me 48.

I need to don't know 8 x 9 but I do know 4 x 9 so I can just double it.

4 x 9 = 36
4 x 9 = 36
36 + 36 = 72

Now you can try halving and doubling with these questions.

a) 6 x 9
b) 7 x 8
c) 6 x 7
d) 8 x 6
e) 6 x 5