SHORTCUT FOR MULTIPLICATION OF11
Consider 11 x 35
Take 35 and separate the digits
Add 3+5. Put the 8 in between 3&5.
We get 385
Therefore 11x35=385
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If the number being multiplied has digits that add up to more then 9, you simply carry over to the first digit. For example:
Consider 11 x 57
Take 57 and separate the number
Add 5&7=12
add 1 to the first digit 5, it gives 6.
and put the 2 in the middle. You end up with 627
Therefore 11x57=627.
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1 comment:
thanks for the great help and would like to learn more from you
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