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Learn the tricks of the trade. Find fun and interesting ways to shortcut operating with numbers!
number of divisors
Doing Simple Math in Your Head by W. J. HowardPresents shortcuts, tips, and strategies for simplifying and solving math problems that occur in everyday life, such as figuring out a restaurant bill, or estimating a grocery total.
Secrets of Mental Math by Arthur Benjamin; Michael ShermerThese 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.
See Ya Later Calculator by Portable Press Staff"[Presents] mathematical tricks, shortcuts, and timesavers ... to make math understandable, interesting, easy ... and fun! ... [Includes] dozens of ways to do math in your head -- even faster than you can do it with a calculator"--Back cover.
Call Number: 510 SEE
Publication Date: 2017
Short-Cut Math by Gerard W. KellyA collection of 150 math short-cuts that make adding, subtracting, multiplying, and dividing faster and easier; includes sample problems with step-by-step solutions.