How to multiply a 2 digit number by 11

“If you think dogs can’t count, try putting three dog biscuits in your pocket and then giving Fido only two of them.”

~Phil Pastoret


Today is Random Tidbit Tuesday at StoryChuck, where I post something I find strange but interesting.

It’s amazingly easy to multiply 11 by any two digit number if you use the following trick. Split the number apart, add them together, and stick the sum in the middle.


To illustrate. Let’s say you have 52 X 11



Split 52 apart. 5 _ 2
Add the 5 + 2 together: 5 + 2 = 7
Put t...
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Published on May 01, 2012 09:30
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