Sunday, 11 August 2013

Fast Track Multiplication Techniques or Tricks

Tricks 2
When a number (N) is multiplied by 11, 101, 1001, … or (10n + 1).
In Such a cases, n zero are put at the right end of N to make a new number M and then N is added to this new number to get the result. Clearly, M+N is the result of multiplication.
Example- Multiply 4241 with 101

Solution. Here, N=4241, (10n +1)=(102 +1)= 101
            According to the rule,
            (N)                   (M)                  (N)
Therefore- (M+N) = 424100 + 4241 = 428341

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