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 Nikhilam Method of Complementing

 

"Subtract all from nine and the last from ten“.Then getting the above complement of the subtrahend.We add the subtrahend and minuend to get the subtraction result required.

 

For example 1000 - 357 = ?      (subtraction from 1000)

We simply take each figure in 357 from 9 and the last figure from 10.
Step 1. 9-3 = 6
Step 2. 9-5 = 4
Step 3. 10-7 = 3

So the answer is 1000 - 357 = 643

For example 1000 - 357 = 643

We simply take each figure in 357 from 9 and the last figure from 10.

 

e

So the answer is 1000 - 357 = 643

And thats all there is to it!

This always works for subtractions from numbers consisting of a 1 followed by noughts: 100; 1000; 10,000 etc.

Similarly 10,000 - 1049 = 8951

f

For 1000 - 83, in which we have more zeros than figures in the numbers being subtracted, we simply suppose 83 is 083.
So 1000 - 83 becomes 1000 - 083 = 917