Rapid Math and Magic with Numbers: Without Using a Calculator

by Archie Frederick Collins

The purpose of this book is to show you how to handle figures and numbers quickly and accurately. To know how to perform rapid mathematical operations is to jack-up the power of your mind and hence your efficiency. Any one who can do ordinary arithmetic can easily master the simple methods given in this book. If you are quick and accurate at figures and numbers, then you wield a tool of mighty power and importance in the business world, and then by making use of short cuts you put a razor edge on that tool with the result that it will cut fast and smooth and sure, and this gives you power multiplied. Here then, you have a key which will unlock the door to rapid calculations and all you have to do, whatever vocation you may be engaged in, is to enter and use it with pleasure and profit. The last chapter in the book shows you how to do magic tricks with numbers. The original title of this book was "Short Cuts in Figures.".

88 pages, Paperback

First published October 13, 2009

About the author

Archie Frederick Collins, who generally went by A. Frederick Collins, was a prominent early American experimenter in wireless telephony and prolific author of books and articles covering a wide range of scientific and technical subjects.