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MATH Hacks- Multiplication by 11 without calculator

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MATH Hacks- Multiplication by 11 without calculator

E
exsendexpress

1 Views • Sep 03, 2015

Description

MATH Hacks- Multiplication by 11 without calculator tutorial

ex: answer the following without calculator:
11 x 45 =
11 x 68 =
11 x 99 =

Can you make it without calculator as fast as possible? this apply only if one of the problem to be multiplied is 11

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