Question

Multiply: 329 x 684
I need to put a comma or not
hel pleaseee

Answer 1

You can normally calculate, but what I use is :

329 x 684 = 329 x (700-16)

= 329 x 100 x 7 - 329 x 16
= 32900 x 7 - 329 x 16
= 230300 - 5364 = 225036.