Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required.
To get the free app, enter your email address or mobile phone number.
Short-Cut Math Paperback – April 1, 1984
Top 20 lists in Books
View the top 20 best sellers of all time, the most reviewed books of all time and some of our editors' favorite picks. Learn more
Frequently Bought Together
Customers Who Bought This Item Also Bought
From the Back Cover
Can you multiply 362 x .5 quickly in your head? Could you readily calculate the square of 41? How much is 635 divided by 2½? 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.
More About the Author
Top Customer Reviews
I like the emphasis on learning to work the problem to the level of precision you need. Say, if your house is so many square feet rounded and you want to find out how much paint will cover the surface, you may require 5.452 gallons of paint, but you'll have to buy 6 gallons from the store. So what's the point of the precision?
This book is exceptionally well written. Each problem is worked out or resolved completely. When I used it, I covered up the answers and worked each problem. I spent no more than 20-30 minutes a day to keep it fresh and drudgery free.
Joe Waynick, Author
"Internet Bookselling Made Easy!" series
Most Recent Customer Reviews
I am totally amazed at how well these techniques works in this book.. This is a great gift item for students. This is the gift that keeps on giving. I am a satisfied customerPublished 1 month ago by Arthur Fuller
IT IS GREAT. LOTS OF NEAT WAYS TO DO MATHEMATICS IN YOUR HEAD QUICKLY AND EASILY. ALSO A SHORT INFORMATIVE HISTORY OF MATH FROM 500 BCE. Read morePublished 2 months ago by john clark
Very nice book on mental tricks, shortcuts, and all that to make computations easier mentally.Published 2 months ago by fernando vallejo torrecilla
Math short tip is hard to follow. Had to read several times to get it.Published 2 months ago by GeminisLob
The thing I didn't like about this book was that it did not provide exercises. Other than that, it's a great book.Published 4 months ago by Erika Trujillo