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50 Comments on NumbersNearMultiplesOfTen
### 50 Comments. ### How to do 56 x 49? I can't get the result. -- Jiggaboo 2009-09-15 21:42 UTC ---- . . .
1K - last updated 2014-09-06 11:08 UTC by de3x.mullvad.net

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= Mentat Wiki = This wiki is a collaborative environment for exploring ways to become a better thinker. . . . in your head - MentalMath ''' * Multiplication: NumbersNearMultiplesOfTen, LogarithmTechnique * Roots . . .
4K - last updated 2011-09-07 05:16 UTC by RonHaleEvans

NumbersNearMultiplesOfTen
It's fairly easy to multiply two numbers that are close to the same multiple of 10. The algorithm for . . .
4K - last updated 2015-12-06 13:02 UTC by tosbourn

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