Short-cut Mathematics (Dover Books on Mathematics)

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9780486246116: Short-cut Mathematics (Dover Books on Mathematics)

Book by Kelly Gerard W

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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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Can you multiply 362 x .5 quickly in your head? Could you readily calculate the square of 41? How much is 635 divided by 21/2? 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, e asier 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 Nunmbers; 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.

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1.

G. W. Kelly
Editorial: Dover Publications Inc., United States (1984)
ISBN 10: 0486246116 ISBN 13: 9780486246116
Nuevos Paperback Cantidad: 10
Librería
The Book Depository
(London, Reino Unido)
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[?]

Descripción Dover Publications Inc., United States, 1984. Paperback. Estado de conservación: New. Revised edition. 211 x 137 mm. Language: English . Brand New Book. Can you multiply 362 x .5 quickly in your head? Could you readily calculate the square of 41? How much is 635 divided by 21/2? 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. Nº de ref. de la librería AAC9780486246116

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Kelly, Gerard W.
Editorial: Dover Publications (1984)
ISBN 10: 0486246116 ISBN 13: 9780486246116
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Descripción Dover Publications, 1984. Paperback. Estado de conservación: New. Nº de ref. de la librería 0486246116

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3.

G. W. Kelly
Editorial: Dover Publications Inc., United States (1984)
ISBN 10: 0486246116 ISBN 13: 9780486246116
Nuevos Paperback Cantidad: 10
Librería
The Book Depository US
(London, Reino Unido)
Valoración
[?]

Descripción Dover Publications Inc., United States, 1984. Paperback. Estado de conservación: New. Revised edition. 211 x 137 mm. Language: English . Brand New Book. Can you multiply 362 x .5 quickly in your head? Could you readily calculate the square of 41? How much is 635 divided by 21/2? 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. Nº de ref. de la librería AAC9780486246116

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Descripción Estado de conservación: New. Depending on your location, this item may ship from the US or UK. Nº de ref. de la librería 97804862461160000000

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Descripción Dover Publishers. Estado de conservación: New. Brand New. Nº de ref. de la librería 0486246116

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Descripción 1984. PAP. Estado de conservación: New. New Book.Shipped from US within 10 to 14 business days. Established seller since 2000. Nº de ref. de la librería IB-9780486246116

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Descripción Dover Publications. PAPERBACK. Estado de conservación: New. 0486246116. Nº de ref. de la librería Z0486246116ZN

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Descripción Dover Publications. PAPERBACK. Estado de conservación: New. 0486246116. Nº de ref. de la librería Z0486246116ZN

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Kelly, Gerard W.
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Descripción Dover Publications. PAPERBACK. Estado de conservación: New. 0486246116. Nº de ref. de la librería Z0486246116ZN

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Kelly, Gerard W.
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Descripción Dover Pubns, Mineola, New York, U.S.A., 1984. Soft cover. Estado de conservación: New. 5.5x8.5. Using the simple methods in this volume, you can double or triple your calculation speed. Includes Adding by 10 Groups; No-Carry Addition; Subtraction without borrowing; Fastest Way to Addor Subtract Any Pair of Fractions - and more! 112 pages. Index. Nº de ref. de la librería 14808

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