Short-cut Math
By:Gerard W. Kelly
Published on 1984-04-01 by Courier Corporation
Can you multiply 362 x .5 quickly in your head? Could you readily calculate the square of 41? How much is 635 divided by 2«? Can 727,648 be evenly divided by 8? If any of these questions took you more than a few seconds to solve, you need this book. Short-Cut Math is a concise, remarkably clear compendium of about 150 math short-cuts ? timesaving tricks that provide faster, easier ways to add, subtract, multiply, and divide. By using the simple foolproof methods in this volume, you can double or triple your calculation speed ? even if you always hated math in school. Here's a sampling of the amazingly effective techniques you will learn in minutes: Adding by 10 Groups; No-Carry Addition; Subtraction Without Borrowing; Multiplying by Aliquot Parts; Test for Divisibility by Odd and Even Numbers; Simplifying Dividends and Divisors; Fastest Way to Add or Subtract Any Pair of Fractions; Multiplying and Dividing with Mixed Numbers, and more. The short-cuts in this book require no special math ability. If you can do ordinary arithmetic, you will have no trouble with these methods. There are no complicated formulas or unfamiliar jargon ? no long drills or exercises. For each problem, the author provides an explanation of the method and a step-by-step solution. Then the short-cut is applied, with a proof and an explanation of why it works. Students, teachers, businesspeople, accountants, bank tellers, check-out clerks ? anyone who uses numbers and wishes to increase his or her speed and arithmetical agility, can benefit from the clear, easy-to-follow techniques given here.
This Book was ranked at 12 by Google Books for keyword Math book.
Book ID of Short-cut Math's Books is EMoJ2z7yGcwC, Book which was written byGerard W. Kellyhave ETAG "kr7j/CQjz+0"
Book which was published by Courier Corporation since 1984-04-01 have ISBNs, ISBN 13 Code is 9780486246116 and ISBN 10 Code is 0486246116
Reading Mode in Text Status is false and Reading Mode in Image Status is true
Book which have "112 Pages" is Printed at BOOK under CategoryMathematics
This Book was rated by 3 Raters and have average rate at "3.5"
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Book was written in en
eBook Version Availability Status at PDF is true and in ePub is false
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