Description
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by
Gerard W. Kelly (Author)
Clear, concise compendium of about 150 time-saving math short-cuts features faster, easier ways to add, subtract, multiply, and divide. Each problem includes an explanation of the method, a step-by-step solution, the short-cut solution, and proof, as well as an explanation of why it works. No special math ability needed.
Number of Pages: 114Dimensions: 0.31 x 9 x 6 INPublication Date: May 08, 2012
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