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1. Short-cut math
by Gerard W Kelly
Clear, concise compendium of about 150 time-saving math short-cuts features faster, easier ways to add, subtract, multiply, and divide. Each problem ... More
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3. Speed Mathematics Simplified: A Complete Guide
by Edward Stoddard
An invaluable reference for people in business as well as students, teachers, and anyone who wants to improve mathematical skills, this entertaining, ... More
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10. Rapid Math Without a Calculato
by A Frederick Collins, A N Wilson, Jerry Wilson
This book enables the average person to become capable of manipulating numbers, and the mathematical shortcuts explained can all be performed without ... More
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11. Numbers: Shortcuts & Pastimes
by Jack Gilbert
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19. Speed and fun with figures
by T. O'Conor Sloane
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21. Dead Reckoning: Calculating Without Instruments
by Ronald E Doerfler
No author has gone as far as Doerfler in covering methods of mental calculation beyond simple arithmetic. Even if you have no interest in competing ... More
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22. How to Calculate Quickly: Full Course in Speed Arithmetic
by Henry Sticker
Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, mental division of large numbers, more. Also numerous ... More
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23. Introduction to Geometry
by Coxeter H S M
This classic work is now available in an unabridged paperback edition. The Second Edition retains all the characterisitcs that made the first edition ... More
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24. Figuring: The Joy of Numbers
by Shakuntala Devi
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