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**

Nadia says

omg… i’m so glad someone has finally made a series for this!!! i have been struggling with this kind of math for the longest time and thought i was the only one. this is a lifesaver leah!! definitely checking out your other vids

Leah4sci says

Very glad this has been helpful to you! You are most definitely not alone. So much so, that I have a whole set of videos on MCAT Math as apart of the MCAT Study Hall too, for a deeper look.

sharaka browley says

This is so helpful! Thank you so much.

Leah4sci says

Thanks Sharaka

umerfarooq says

Its just amazing. I am just geting every calc right and enjoying doing it. helped me alot thank u very much.

Leah4sci says

You’re welcome!

debleuve says

These videos are brilliant! Thank you so much, Leah!!

Leah4sci says

You’re welcome! Hope it’s helping you save time and frustration with the sciences