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Contents contributed and discussions participated by Jacob Heyn

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More Quick Multiplications - 1 views

started by Jacob Heyn on 23 Sep 11 no follow-up yet

#1 Jacob Heyn on 23 Sep 11

http://www.mathsisfun.com/multiplication-tips-tricks.html

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easy Multiplication by 11 - 0 views

started by Jacob Heyn on 23 Sep 11 no follow-up yet

#1 Jacob Heyn on 23 Sep 11

http://mathtricks.org/multiplication-tricks/multiplication-tricks-multiplying-by-11/

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Jacob Heyn