Multiply faster using "Vedic Ganit" technique

I will explain a simple and fastest process of multiplication. This can help you to get answers faster.

Let's assume you have to multiply 9999 X 2456.

Now think how much time it will take? Maybe 30 sec. or 50 sec. or more as well.. 

Now try this:

    9999

 x 2456

---------------

24557544

I didn't use any calculator. let me explain the steps.

Step 1. Subtract 6 (last number) from 10 = 4 (10-6)

Step 2. Rest numbers you can subtract from 9, so (9-5) , (9-4) , (9-2) = 4 , 5 , 7

Step 3. Now subtract 1 from 2456 = 2457

Step 4. You got the answer. i.e 2457 754 4

This is just a small example and this will only work if you have one multiplier with 9's only. I know you won't get always similar but for other, there is a different rule. I hope i will get another quick lesson for that. Or reach me to learn this types of tricks which can make your life easy.