Mathematics Hack Part 1 of 5

Happy New Year 2015, everyone. 

To start off the New Year, I will be coming out with a series of useful Mathematic hack. Those mathematic stuffs that you don't learn in school but prove to be very useful in life later.

Here's one to start off with, I have about will update one every 3 days. Enjoy

How to multiply large numbers

(Source: Taken from the internet)

Try it, it works.

I give another example: Say 95 x 95 

So 100-95 = 5 and 5+5=10 

So we know the first 2 numbers of the answer is 100-10= 90

And last 2 numbers of the answer is 5 x 5 = 25

So the answer is 9025.