What is the product of 4 x 27?

Answer 1

Here are two ways you can find the answer in your head:

I don't really know my 27 times tables very well, but I know that 27 is 3 x 9, and 4 x 3 is 12, and I do know my 12 times tables, so I take the 3 from the 27 and multiply it by the 4.

4 x 27 = 4 x 3 x 9 = 12 x 9 = 108

The other way is to change 27 into 25 + 2 and multiply each addend by 4.

4 x 27 = 4 x (25 + 2) = (4 x 25) + (4 x 2) = 100 + 8 = 108