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expiredphoinix | Staff posted Jul 6, 2026 8:31 AM

Secrets of Mental Math (eBook)

$2.00

$4.99

59% off
Amazon
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Various Retailers have Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks by Arthur Benjamin, Michael Shermer (eBook) on sale for $1.99.

Thanks to Deal Hunter phoinix for sharing this deal.

Available from:About this book:
  • 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.

Editor's Notes

Written by qwikwit | Staff

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Various Retailers have Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks by Arthur Benjamin, Michael Shermer (eBook) on sale for $1.99.

Thanks to Deal Hunter phoinix for sharing this deal.

Available from:About this book:
  • 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.

Editor's Notes

Written by qwikwit | Staff

Original Post

Written by phoinix | Staff

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10 Comments

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Jul 6, 2026 9:53 AM
4K Comments
Joined Nov 2008
CollegeRamenEatJul 6, 2026 9:53 AM
4K Comments

Our community has rated this post as helpful. If you agree, why not thank CollegeRamenEat

there a whole farking generation that needs this
2
2
Jul 6, 2026 1:55 PM
394 Comments
Joined Nov 2017
AAMC27Jul 6, 2026 1:55 PM
394 Comments

Our community has rated this post as helpful. If you agree, why not thank AAMC27

Sounds fun, but some of the reviews mention that the author digresses quite a lot so it may be a bit of slog after a while.
3
Jul 6, 2026 3:04 PM
5 Comments
Joined Nov 2013
libbittaJul 6, 2026 3:04 PM
5 Comments
Kindle version only for the $1.99
Jul 7, 2026 2:23 AM
37 Comments
Joined Apr 2010
rorschaqJul 7, 2026 2:23 AM
37 Comments
We'll see
Jul 7, 2026 12:03 PM
966 Comments
Joined Jun 2012
-MoistTowelette-Jul 7, 2026 12:03 PM
966 Comments
Quote from AAMC27 :
Sounds fun, but some of the reviews mention that the author digresses quite a lot so it may be a bit of slog after a while.
2 + 2 = 5 = 3 + 3, when 2 is feeling a little more like 3 and 3 is feeling a little more like 2. But I digress.
2
Jul 7, 2026 2:13 PM
68 Comments
Joined Mar 2011
SDealsdesireJul 7, 2026 2:13 PM
68 Comments
Sounds perfect for all my stressful Debts!
Jul 7, 2026 7:27 PM
7 Comments
Joined Apr 2020
Zoo_CarJul 7, 2026 7:27 PM
7 Comments
this book is a classic, read it 10 years ago and now im a senior yr math major!
1

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Jul 7, 2026 7:38 PM
94 Comments
Joined Aug 2020
HonestWinter4283Jul 7, 2026 7:38 PM
94 Comments
Quote from -MoistTowelette- :
2 + 2 = 5 = 3 + 3, when 2 is feeling a little more like 3 and 3 is feeling a little more like 2. But I digress.
Numeral fluid?
1
Jul 7, 2026 9:56 PM
966 Comments
Joined Jun 2012
-MoistTowelette-Jul 7, 2026 9:56 PM
966 Comments
Quote from HonestWinter4283 :
Numeral fluid?
Could be. Or the 2's are feeling a little heavy and the 3's are feeling a little light. However, if I had mentioned 1's and 0's it would clearly be binary. But I digress.
Jul 8, 2026 12:16 PM
173 Comments
Joined Oct 2011
JgirwarnJul 8, 2026 12:16 PM
173 Comments
I remember seeing videos of Dr. Benjamin. Great speaker and interesting character akin to Dr. Tyson. Both very brilliant minds.

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