Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks
Jun 2008 · Sold by Crown
4.4star
159 reviews
Ebook
304
Pages
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About this ebook
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.
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.
Ratings and reviews
4.4
159 reviews
A Google user
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October 7, 2011
The one sample chapter was, bluntly- WEAK. If it's any indication of the rest of the book, stay away, and shame on Bill Nye for giving it such a thumbs up intro.
First of all- I'll give you a much quicker way to multiply any number by 11. Ready? (n x 11) = (n x 10) + n. There you go. Take any number n, add a zero to the end, and then add the number. 234 x 11? it's 2340 + 234 = 2574. How about that? I taught it to you in ten seconds.
And the other problem is- even if you liked his trick- he doesn't EXPLAIN WHY it works. He gives you example after example, and tells you how easy it is, without explaining why the 'trick' works. It works- but it would be much better to teach/explain what's going on _behind_ his trick.
Sorry folks, but I was really underwhemed by the sample chapter. I give him two stars because the tricks work, and because the guy wrote a book- but nothing more.
jerome clark
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July 28, 2016
I bought the hard copy about 4 years ago(2012)...and it is still helping me to this day. It's a great read. Teaches you how to break any problem down. From two by one digit multiplication to 5 digit squares. You'll never look at math the same way again. Check out the videos in YouTube. See what the author's mind can do if you need any more convincing!
24 people found this review helpful
r4isen1920
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February 4, 2016
Please don't add it on paid books, and I just want to learn because I am grade 5 student, I want to became this book on TOP! We're poor and I need to learn... please make it free book... BTW I am just going to my friends house just to connect their WIFI
9 people found this review helpful
About the author
Arthur Benjamin is a professor of mathematics at Harvey Mudd College in Claremont, California. He is also a professional magician and performs his mixture of math and magic all over the world.
Michael Shermer is host of the Caltech public lecture series, a contributing editor to and monthly columnist of Scientific American, the publisher of Skeptic magazine, and the author of several science books. He lives in Altadena, California.
Michael Shermer is host of the Caltech public lecture series, a contributing editor to and monthly columnist of Scientific American, the publisher of Skeptic magazine, and the author of several science books. He lives in Altadena, California.
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