I know we have already had a thread here on short cuts but, I found them so usefull and interesting I believed we should compile a method only thread. This thread is only to be used as an area to post vedic style short cuts and not for discussion of them. I would like this to be a resource for all to study and benefit from but that won't work if we fill it with chat. I would ask that any none method posts be removed. Please check before posting that the method is not already covered. Thanks for your help peeps.

eg 1000-236. Take units from ten and the rest each from nine. Remove the one.

 

eg

9 9 10

2 3 6-

7 6 4=

 

If there are too many 0's add a 0 to the smaller number at the front to make it easier. eg 1000-36 becomes 1000-036

 

 

eg

9 9 10

0 3 6-

9 6 4=

 

This works on any size number as long as is only 1 with 0's

I was looking at the Vedic Maths tutorials last night, and the one i particulary liked was for doing two, (or even three digit), multiplication very quickly:

 

The sutra used here is Vertically and Crosswise:

 

To multiply two numbers think of them as set out as below, 21 x 26 =

 

 2       1
 |   x   |
 2       6
 ---------
 4 (14)  6
 ---------

 

Multiply your first column together to get the first part of the answer, i.e 2 x 2 = 4.

Then, multiply crosswise, i.e 2 x 6 and 1 x 2, and add these numbers together to get the middle term, i.e 12 + 2 = 14.

Then multiply the last column together to get the last part of the answer, i.e 1 x 6 = 6.

 

When you have a number of more than one digit, you carry over as you would in "normal" maths, so here, the 1 from the 14 is added to the 4 at the beginning to give 5

 

And so the answer in this case is 546.

Time to get this thread back up. Does anyone have any other methods or sutras of vedic maths? Any good sites you know of?