This tutorial continues from MCAT Math Video 2 where I show you how to use the factor-of-10-trick to quickly multiply and divide any number by a factor of 10, 100, and so on.

However, many of your MCAT chemistry and physics calculations will not be this clean and easy. But you certainly cannot afford to waste time doing long pen-and-paper calculations.

This tutorial video shows you how to utilize the factor of 10 tricks when you have to multiply random numbers, especially when dealing with small yet annoying decimals.

## Factor Of 10 Trick For Multiplying/Dividing Complex Numbers

(Watch video on YouTube or click HERE for the transcript )

## MCAT Style Question Solved In This Video:

**Force Question: **An elephant bumps a stone weighing 89 grams giving it an initial acceleration of 200 m/s^2. With how much force did the elephant hit the stone? Watch the video for the detailed shortcut and solution

**<– See Previous Video:**Trick for Multiplying and Dividing Units of 10

**–> See Next Video:**Scientific Notation – Addition / Subtraction / Multiplication / Division

**Click HERE**for my FREE MCAT Math Quiz

**This is video 3 in my series on MCAT Math Without A Calculator. Click HERE for the entire series**