Short-Cut Math is a concise, remarkably clear compendium of about 150 math short-cuts — timesaving tricks that provide faster, easier ways to add, subtract, multiply, and divide.By using the simple foolproof methods in this volume, you can double or triple your calculation speed — even if you always hated math in school. Here's a sampling of the amazingly effective techniques you will learn in minutes: Adding by 10 Groups; No-Carry Addition; Subtraction Without Borrowing; Multiplying by Aliquot Parts; Test for Divisibility by Odd and Even Numbers; Simplifying Dividends and Divisors; Fastest Way to Add or Subtract Any Pair of Fractions; Multiplying and Dividing with Mixed Numbers, and more.The short-cuts in this book require no special math ability. If you can do ordinary arithmetic, you will have no trouble with these methods. There are no complicated formulas or unfamiliar jargon — no long drills or exercises. For each problem, the author provides an explanation of the method and a step-by-step solution. Then the short-cut is applied, with a proof and an explanation of why it works.Students, teachers, businesspeople, accountants, bank tellers, check-out clerks — anyone who uses numbers and wishes to increase his or her speed and arithmetical agility, can benefit from the clear, easy-to-follow techniques given here.

    Authors and money-management experts Lyle and Tracy Shamo say, "Like it or not, meeting basic needs has nothing to do with poverty and everything to do with how well we manage our money." In this practical guidebook, the authors will help you take control of your money, teaching you how to pay off your debt-including your mortgage and car loans- and stay out of debt. Advanced computer software (included on a CD-ROM that comes with the book) will help you assess your financial status, learn more about where your money is going and discover how to channel it to the right places.

     Will Hall is a CIA agent in a South American country on the brink of Civil War. But when the moderate, rebel leader that Hall covertly supported is assassinated, the spy resigns and retreats to a cabin in the North Carolina woods. His quiet, civilian life is shattered when an unknown adversary frames him for revealing Agency secrets, putting a kill-on-sight target on his back. Hall runs in a global chase to evade death, clear his name, and free himself from the flawless "box job" that could become his coffin. Praise for Ralph Dennis: "A breathless, lean noir thriller. Every line is razor sharp. Jason Bourne fans will find a lot to like." Publishers Weekly "Ralph Dennis has mastered the genre and supplied top entertainment." New York Times "Believable and constantly thrilling." The Spy Guys & Gals Site "His prose is muscular, swift and highly readable. " Joe R. Lansdale, New York Times bestselling author "Exceptional characterization, strong and vigorous prose." Mystery Scene Magazine "Straight-up, hardboiled crime fiction, written in a tight, evocative voice with a wicked, dark sense of humor." Lee Goldberg, New York Times bestselling author

    Written by the well-known mathematics teacher consultant, this volume's collection of over 200 clearly illustrated mathematical ideas, concepts, puzzles, and games shows where they turn up in the real world. You'll find out what a googol is, visit hotel infinity, read a thorny logic problem that was stumping them back in the 8th century.THE JOY OF MATHEMATICS is designed to be opened at random...it's mini essays are self-contained providing the reader with an enjoyable way to explore and experience mathematics at its best.

    The author defines all terms, points out potential pitfalls in algebraic calculation, and makes problem solving a fun activity. New in this edition are painless approaches to understanding and graphing linear equations, solving systems of linear inequalities, and graphing quadratic equations. Barron’s popular Painless Series of study guides for middle school and high school students offer a lighthearted, often humorous approach to their subjects, transforming details that might once have seemed boring or difficult into a series of interesting and mentally challenging ideas. Most titles in the series feature many fun-to-solve “Brain Tickler” problems with answers at the end of each chapter.

    This book leads the reader from simple graphs through planar graphs, Euler's formula, Platonic graphs, coloring, the genus of a graph, Euler walks, Hamilton walks, more. Includes exercises. 1976 edition.