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Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks
List price: $12.95
Sale price: $10.36
You save: $2.59 (20%)
Author(s): Arthur Benjamin, Michael Shermer
Binding: Paperback
Dewey Decimal Number: 510
EAN: 9780307338402
ISBN: 0307338401
Label: Three Rivers Press
Language(s): German Original LanguageEnglish UnknownEnglish Published
List Price: $12.95
Manufacturer: Three Rivers Press
Number Of Items: 1
Number Of Pages: 304
Package Dimensions:
Height: 0.8"
Width: 5.2"
Length: 0.8"
Weight: 0.25 lbs.
Product Group: Book
Address: 2006-08-08
Publisher: Three Rivers Press
Release Date: 2006-08-08
Studio: Three Rivers Press
Editorial Reviews
Product Description:
These simple math secrets and tricks will forever change how you look at the world of numbers.
Secrets of Mental Math will have you thinking like a math genius in no time. Get ready to amaze your friends—and yourself—with incredible calculations you never thought you could master, as renowned “mathemagician” Arthur Benjamin shares his techniques for lightning-quick calculations and amazing number tricks. This book will teach you to do math in your head faster than you ever thought possible, dramatically improve your memory for numbers, and—maybe for the first time—make mathematics fun.
Yes, even you can learn to do seemingly complex equations in your head; all you need to learn are a few tricks. You’ll be able to quickly multiply and divide triple digits, compute with fractions, and determine squares, cubes, and roots without blinking an eye. No matter what your age or current math ability, Secrets of Mental Math will allow you to perform fantastic feats of the mind effortlessly. This is the math they never taught you in school.
Also available as an eBook
Customer Reviews Average rating - 5.0
Rating - 5 Date: 2009-01-04
Content: After reading the first couple chapters of this book I couldn't help but wonder why nobody had ever taught me this stuff in school. The author does a wonderful job of helping you to enjoy mental math and making it easier all at the same time.
Summary: Should be used in schools
Rating - 5 Date: 2008-12-12
Content: This book provides easy to understand strategies for dramatically improving the speed of mental calculation. It is easy to read, and the strategies are effective. I also bought "How to calculate quickly" and "Short-Cut math" and this was clearly the best of the lot.
Summary: Great book for learning mental math tricks
Rating - 5 Date: 2008-12-01
Content: Nice book. My son and I are both enjoying it a lot. I hope it sticks, I surely need it.
Summary: Nice book.
Rating - 5 Date: 2008-12-01
Content: this is practical, efficient arithmetic. if you take the time to master Dr. Benjamin's left -> right method for addition, subtraction and multiplication then while someone else is digging out their calculator, opening it, turning it on, and entering the problem (maybe incorrectly) you've already checked the answer in your head and moved on.
the division simplification and square root estimation (uncannily accurate) methods are also excellent.
one thing could be better. his treatment of mod sum checking falls short. if you reduce down to 1 digit as you go and ignore all 9's both in number and in all interim sums, then mod sum checking gets slick fast and it's easier to add that function to your mental calculator. also he doesn't mention mod sum checking of division. you can do it, but not by dividing.
modsum (quotient) X modsum (divisor) = modsum (dividend - remainder)
before i found this book, i spent alot of time with the Trachtenberg method. i just couldn't see what all the fuss was about. it seemed hoakey to me. now i know why. compared to this, it IS hoakey.
Summary: Gold
Rating - 5 Date: 2008-10-21
Content: I've never been good at math, but a couple years ago, I began to love Calculus and ended up taking Calc 1, 2 & 3. However, the only thing that was slowing me down was the simple arithmetic and mental calculations that I was so bad at doing. A friend recommended this book to me after I told her that my slow mental math was the reason I kept running out of time on the MCAT Physical Sciences section. I got this book two weeks ago and I've already increased my MCAT score by two whole points. This book is amazing and can really change your life. Do yourself a favor and buy it.
Thanks Dr. Benjamin!
Summary: Amazing Book!!!
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