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Managing Multiplication by Eleven

Updated on April 30, 2015

Multiplication by 11 is so easy to do

keep reading along and let me teach you

11 times any 2 digit number for example 26

Is the problem I'll first show you how to fix

Take the 2 and the 6 and add them together for 8

Stick 8 in between and your product is great !

Yep 286 is the correct sum

But, wait cause we are not done

Suppose you are factoring 11 times 85

Total of 8 plus 5 is 13 you arrive

3 still in the middle and 1 adds to 8

Practice on paper what here I state

8 plus 1, 3 in the middle then 5

The correct answer is 935 !

This math trick works factors 11 to 99

Try it with all, you'll see it's divine !

Remember this is only for number 11s use

Tried on any other number leads only to abuse.


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