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Math Help - Quick and Accurate Mental Subtraction

  1. #1
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    Quick and Accurate Mental Subtraction

    Are there any resources you might recommend for learning how to do mental subtraction? With addition you simply work left to right. With subtraction it seems much more complicated to do mentally. Any tips would be appreciated.

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    Last edited by allyourbass2212; July 26th 2012 at 01:41 PM.
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  2. #2
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    Re: Quick and Accurate Mental Subtraction

    Quote Originally Posted by allyourbass2212 View Post
    With addition you simply work left to right.
    Huh? Surely, it's left to right...no?
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  3. #3
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    Re: Quick and Accurate Mental Subtraction

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  4. #4
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    Re: Quick and Accurate Mental Subtraction

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