Multiplication of numbers closer to 100

Multiplication of  numbers closer to 100 (< 100)

Say, the numbers are 93 x 97

step 1. find out how far the numbers are  from 100.

so,         93 --------7
              97--------3

step 2. multiply  7 x 3 and record as 21.

step 3. subtract 3 from 93 or 7 from 97, both will always be same.
so, we have 93 - 3 = 90, or 97 - 7 = 90
step 4. write the answer as 9021

Let me take some more examples;

say I want to multiply 89 x 94

so,         89 --------11
              94--------6
             83    /      66 --------8366 is the answer

step 2. multiply  11 x 6 and record as 66.

step 3. subtract 11 from 94 or 6 from 89, both will always be same.
so, we have 94 - 11 = 83, or 89 - 6 = 83
step 4. write the answer as 8366.

with a little practice you can write the answer immediately.


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