Rapid Arithmetic: Quick and Special Methods in Arithmetical Calculation (Paperback) (ISBN-13: 9781022517967)

Whether you need to calculate complex equations in your head or you just want to improve your math skills, this book is a valuable resource. In clear and concise language, it introduces a variety of methods and shortcuts for performing arithmetic operations quickly and accurately. From mental multiplication to finding square roots, this book covers it all.

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