Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, direct multiplication by numbers greater than 12, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions. 1945 edition.
How to Calculate Quickly: Full Course in Speed Arithmetic
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4.1 out of 5 stars
12 reviews
59 of 61 people found the following review helpful
5.0 out of 5 stars
EXCELLENT BOOK TO IMPROVE MENTAL CALCULATION
15 Aug 2000
By A Customer
- Published on Amazon.com
Format:Paperback
I gave it a five star simply because the books is simple and very effective at getting you to learn the "art" of quick calculation.
I looked at all the others in that field. Most of them teach you tricks for quick calculation. To do certain calculation you need to remember the tricks. There are dozen of them and you just get confused. This book do not used trick but teach you "number sense" ... and how to calculate from left to right with complex number. Beleive me, I was affraid of that kind of calculation and with that book I learned a lot!
I used it because I am preparing for interviews in management consulting. Case study need you to do lots of quick mental calculation. I am very good with complex calculation but mental arithmetics is something else.
BUY THIS BOOK ... very slim, but as said before, lots lots of exercise well made and improving in difficulty ... cant say more, its the book I was looking for.
Amusing, it was first published in 1945 ...
33 of 34 people found the following review helpful
4.0 out of 5 stars
I have kept my copy for years
7 April 2000
By William Meisel
- Published on Amazon.com
Format:Paperback
and keep going back to it. It is important that a prospective buyer knows this book focuses on MENTAL arithmetic, i.e., no paper. If that is an interest of yours, then this is your book. If you are interested in "shortcuts", there are other books out there (though the last chapter of this book contains some of the more popular ones.) Don't think you can multiply two two-digit numbers in your head? you may be surprised.
33 of 34 people found the following review helpful
5.0 out of 5 stars
It does what it says...
26 Mar 2000
By A Customer
- Published on Amazon.com
Format:Paperback
Long collection of exercises to improve your mental calculating ability. This book will keep you busy for quite a while. It's slim but there's a lot of exercises in it. It will give you eough familiarity with numbers to do fairly large multiplication and division (let alone addition and subtraction) in your head. Fractions included. Requires no advanced math skills of any sort. Presupposes a knowledge of basic caluculation, that's it. No algebra, geometry etc.
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4.1 out of 5 stars
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