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Preview — Secrets of Mental Math by Arthur T. Benjamin
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 calculat..more
Published August 8th 2006 by Three Rivers Press
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I LOVE this book! It's a nerd's dream come true for me. I checked it out from the library and had it for at least two months. It pained me to give it back. I'm going to buy it soon as I get money. These tricks are so wonderful, it's a wonder they didn't use these in school.
I loved the Pi part. I can recite Pi to a hundred digits now! Always been a goal of mine too. I was content with knowing it for 20 digits, but this made it super easy to know it to a hundred. Then the figuring out the weekday..more
This book helped me to re-build a fresh perspective on doing math in my head. He builds on a central idea of breaking down seemingly complex computations into simple, manageable ones. He then gives you new ways of seeing numbers such that, once these various patterns become familiar, you are able to employ tricks to getting the math done quickly. One of his first examples is how to square a two-digit number that ends in 5.
'.. you need to remember only two things. 1. The answer begins by multipl..more
Foreword by Bill Nye?
BILL NYE?!? Watching him was definitely the greatest time I had in science class. Knowing that he advocates this book (or was bought out to support it) is pretty much worthy of my attention. No question there is definitely useful (to the point of being necessary) information in this book. In the first chapter (ironically Chapter 0), I was introduced to a smorgasbord of various tricks that became immediately useful: the rule of multiplying 11s, squaring numbers that end in 5, m..more
Aug 03, 2015Jeremy rated it really liked it
As a nerd who is desperate for attention but also very lazy, this book was a godsend! Arthur Benjamin's mental math tips are very easy to learn, yet still appear impressive to the casual observer. Towards the end of the book, there are some real showstoppers, but even if one only gets halfway through the tricks, you could still impress people at a party (a very lame party).
Apr 28, 2009Mike Shultz rated it really liked it
I slowed down about half way through this book and was ready to give it 3 stars. In some cases I had discovered a fair number of the tricks on my own, or had learned them elsewhere. The processes described were sometimes just brute mathematics, requiring you compute, then hold numbers in your head and compute again.
However, the second half had some cool techniques that I didn't know, and while 4 or 5-digit multiplication problems are just plain difficult (as the author admits), 3 and 4 digit sq..more
Two stars really isn't a fair rating. Had some fun adding and subtracting and then multiplying 3 digit numbers in my head.
But as the problems get more complex, my limitations became apparent. Couldn't read through the entire book. When I couldn't do what the book was suggesting, just gave up. So no - reading this book wont suddenly make you a math genius. There are some interesting stories with interesting perspectives, but not enough to inspire the me to practice the 'tricks' and yes I expect th..more
The author is enthusiastic, but somehow this enthusiasm doesn't transmit to the reader. The tricks work, but I am incredibly bored by this book regardless. (might have worked better with real-life examples, but I for one am hard-pressed to think of a good real-life reason to multiply a pair of two-digit numbers in your head)
Jul 26, 2007Natalya rated it it was amazing
'Special thanks to NATALYA ST. CLAIR for typesetting the initial draft, which was partly supported by a grant from the Mellon Foundation.' :D
Fantastic book! If you love math, or would just like to be able to struggle less with it, this book is a great tool. One caveat however: don't expect magically easy math abilities. Benjamin shows you the tools to make mental math problems exponentially easier, but at the end of the day you still need to calculate!
Now with that out of the way, can you calculate squares and square roots in your head? For two, three-no-five digit numbers? This book will show you the ways of these and many other fa..more
Dec 16, 2012Lance Greenfield rated it really liked it · review of another edition
I really liked this book, and its accompanying video CD. The author is full of enthusiasm and the mathematical tricks are really worth learning, and so simple.
I enjoyed teaching some of the tricks to my grandson, who, in turn, enjoyed showing them off to his friends and teachers at school. I'd recommend this book to everyone. A lot of fun!
الكتاب الاكثر فائدة في موضوع الحساب الذهني Dec 14, 2016Samantha rated it really liked it
انصح القراء العرب بقراءته اسلوبه سهل جدا والحيل فيه مفيدة وعملية فالناس في حياتها ومعاملتها اكثر ما تستخدم الرياضيات البسيطة غير 'المعقدة' القدرة على حل العمليات بشكل مختصر جدا وذهنيا التي يعلمها الكتاب ستجعلك تحزن على عدم معرفتك السابقة بها good book ..more
Recommends it for: those who want maths to be simpler
Helped me so much to make math easier. I shocked my friends into thinking I was a super genius and with this books helps I won't stop. I put it down because after a while it was starting to bore me but after a few months you can pick back up again.
Jul 07, 2015Deborah rated it really liked it
Shelves: mathematics, self-improvement, non-fiction
An entertaining math book! Seriously. Easy to read and easy to understand strategies for improving number sense. I think my kids might also like how the author frames the equations as tricks or illusions. Of course, with my short memory, I had to buy a copy so I can refer back to it. Sorry library.
Jan 04, 2013Jeff Yoak rated it it was amazing
Shelves: video-collection, courses-video, read-in-2013, physical-on-hand, courses
I tremendously enjoyed both the book and the video course. I was familiar with Benjamin both from other courses and from his mental math tricks. Not only did I improve a lot just from watching, but I picked up some really neat new tricks that I know I can get with practice. Lots of fun.
Apr 26, 2010Jessica rated it really liked it
I already knew/used a few of these tricks, but some were new and pretty smart. And there's nothing nerdier than doing math in you head on the train, so that was fun.
Some things in here I have no interest in mastering, but there are some neat tricks worth some study!
The first third of this book should be mandatory for all math and elementary educators. Gets a little unnecessary after that, but it was still a good read.
May 19, 2014Colin rated it liked it
This was good. I learned some cool ways to do quick math, along with some ways that I can amaze my students.
Aug 24, 2018Benjamin Bastian rated it it was amazing · review of another edition
I absolutely loved this lecture! The professor who taught it was, in my opinion, phenomenal. The secrets of mental math are, I find, very intriguing.
I watched the 'video' book from the library. Fun parlor tricks, but these methods still take lots of practice and memorizing. Definitely a few things for multiplying multi-digit factors I will use going forward but some, like Vedic division, I'll never use.
Starts out interesting. Loses its spark about four chapters in.
Sep 26, 2012Laura rated it really liked it
En una època en la que tothom va amb un mòbil (amb calculadora) a les butxaques, vaig jo i llegeixo un llibre que només es dedica a explicar trucs per calcular (mentalment) més ràpid. Sembla que no té sentit, però.. bé, jo sempre he sigut molt vaga per aquestes coses, i per no haver de treure la calculadora de la bossa, o el mòbil de la butxaca (i obrir la calculadora), o.. sempre acabo calculant les coses de cap, que és més ràpid que buscar una calculadora. D'acord, pels càlculs llargs no, p..more
Jun 29, 2013Leo rated it really liked it · review of another edition
This book was quite helpful for my uses but leaves many topics uncovered. Aug 04, 2013Liz
I used the book to prep for various interviews where I need to do math in my head FAST and without paper. This book was an excellent start. I would say that it is too brief to be exhaustive so I'd recommend consulting other materials if you're trying to learn mental math for a serious goal. What the book does provide is a solid introduction into doing math in your head and if you get through it, you will probably end up wan..more The Secrets Of Mental Math Arthur Benjaminrated it liked it
Recommends it for: home-schooling parents, teachers
Shelves: parenting-education-organization
I skimmed this book extremely fast so probably not quite fair to give it a rating. I learned several things I never knew about math. Just the chapter on multiplication in less than 5 minutes helped me understand the math curriculum theories for my sons' elementary school better than I've received from any teacher or the principal. However, it is a hard core book on math so how exciting could that really be? And it's not really a book to read, but more to work through. So I was not motivated to w..more
This is potent stuff. The first chapters were much like my own way of doing calculations in my head, and so I was lulled into saying to myself 'this is not that hard'. By the last few chapters my face practically melted. Most of us can recognize when we meet the threshold of our mental abilities, and I met mine when doing larger multiplications. All these calculations requires quite a few balls in the air and it is a whole other level multiplying two 5-digit numbers on stage in front of an audie..more
Feb 22, 2011Jackie Fowler rated it liked it
There were enough interesting math shortcuts in this book to keep my interest, especially those dealing with multiplication tricks, squaring, finding divisors (and why those tricks work), and figuring out any day of the week in the Gregorian Calendar. But, there were also many parts that just weren't feasible to me. Only certain people, like the author, are capable of doing all the mental tricks he covers. Some math problems were just too much to do with paper and pencil, and I'm a math person!..more
Apr 26, 2014William Schram rated it it was amazing
Contains techniques for lightning fast mental calculation and other things for elementary mathematics and random tricks. For instance, it includes the phonetic memory system for recalling numbers and a way to calculate dates in your head. The techniques listed in the book are a bit counter intuitive, but they work pretty well. The book also contains problems for you to do on your own in order for you to go and improve your abilities at this particular skill.
Also contained within are biographies..more
I'm neither interested in squaring three-digit numbers in my head nor in doing mathematical magic. I'm only interested in practical mental math. I did buy this book for chapter 5; *** Good Enough; The Art of 'Guesstimation' ***. I've been doing guesstimations for many years intuitively, not very structured. This fine chapter teaches beginners the art of guesstimation while experts can go back to the basics and hone their skills while they might discover something new .. I did do so with approxi..more
The author of this book calls himself a mathemagician. He combines his love to both math and magic in this book. The book introduces creative , simple and easy ways for doing algebra. When reading this book, I realized that I was already using some of the methods introduced in the book. I have to say that even though I am not a math lover, I really enjoyed reading this book and practicing its creative calculations methods. One final note, after you're done with reading the book, check out the re..more
Entertaining, no doubt. I think this is most useful for younger readers who aren't married to the way they were taught to do math in school.
For anyone who loves math, you should read this book. It will help you understand better how numbers relate to each other and why. It adds perspective. I'd recommend this book if math is something you really find interesting, or you want to look smarter than you are.
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Arthur Benjamin holds a PhD from Johns Hopkins University and is a professor of mathematics at Harvey Mudd College, where he has taught since 1989. He is a noted “mathemagician,” known for being able to perform complicated computations in his head. He is the author, most recently, of The Secrets of Mental Math, and has appeared on The Today Show and The Colbert Report. Benjamin has been profiled i..more
“probably heard that math is the language of science, or the language of Nature is mathematics. Well, it’s true. The more we understand the universe, the more we discover its mathematical connections. Flowers have spirals that line up with a special sequence of numbers (called Fibonacci numbers) that you can understand and generate yourself. Seashells form in perfect mathematical curves (logarithmic spirals) that come from a chemical balance. Star clusters tug on” More quotes…
Mental Math SecretsDownload Secrets Of Mental Math : The Mathemagician’s Guide to Lightening Calculation and Amazing Maths Tricks – Arthur BenjaminMichael Shermer ebookSecrets Of Mental Math Free Download
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 EbookDownload Secrets Of Mental Math : The Mathemagician’s Guide to Lightening Calculation and Amazing Maths Tricks – Arthur BenjaminMichael Shermer PDF ebookDownload Secrets Of Mental Math : The Mathemagician’s Guide to Lightening Calculation and Amazing Maths Tricks – Arthur BenjaminMichael Shermer EPUB ebookComments are closed.
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