ForSQ wrote:

The method I usually use:

10 x 123 = 1230

6 x 100 = 600

6 x 20 = 120

6 x 3 = 18

1230+600+120+18=1968

You will not need to do such a calculation on actual GMAT very often. But when you do, for the sake of speed, it is a very good idea to know the multiplication tables (upto 20)

16 * 123

Then you multiply as if 16 is just any other single digit number with which you are multiplying. This is what you do then: 16 times 3 gives 48 so write 8 and carry 4.

16 times 2 is 32, add 4 so 36. Write 6 and carry 3

16 times 1 is 16, add 3 to get 19. Write 19

You get 1968

I know learning tables is a pain but I distinctly remember thanking my dad during my GMAT since he used to insist that I should know my tables out cold.

_________________

Karishma

Veritas Prep | GMAT Instructor

My Blog

Get started with Veritas Prep GMAT On Demand for $199

Veritas Prep Reviews