Tuesday 12 July 2011

Brain Exercise Through Mental Maths - Using Multiplying by 11 Method

By mastering the "multiplying by 11" method described in the previous article, you would be able to do whole lot more.  Multiplications like  76 x 66 can be solved easily.  You would be surprised to know that combinations like 33 x 33 or 44 x 44 are alot easier to do.  It is just a matter of looking at the numbers slightly differently.

For 76 x 66, you need to look at it as 76 x 6 x 11.  If you are already fast in multiplying with a single digit number, you will quickly get 76 x 6 = 456.  Applying the technique of multipying by 11, you then get 456 x 11 = 5016.

You think of 44 x 44 as 4 x 4 x 11 x 11 which simplifies things tremendously.  4 x 4 = 16,   16 x 11 = 176,  176 x 11 = 1936.

Now you are beginning to discover that many problems can be solved a whole lot easier just by looking at them differently.  This is applicable not only to mathematical problems but to the our everyday life as well.

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