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Автор: Gerard W.Kelly
Год: 2012
Издание:
Книга по Требованию
Страниц: 114
ISBN: 9781607964391
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.
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