Download or read book How to Calculate Quickly written by Henry Sticker and published by Courier Corporation. This book was released on 2013-04-15 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions. 1945 edition.

Download or read book How to Calculate Quickly written by Henry Sticker and published by Courier Corporation. This book was released on 1955-01-01 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number sense approach to the four basic operations of arithmetic together with fractions and decimals

Download or read book Secrets of Mental Math written by Arthur Benjamin and published by Crown. This book was released on 2008-06-03 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: These 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.

Download or read book The Trachtenberg Speed System of Basic Mathematics written by Jakow Trachtenberg and published by Souvenir Press. This book was released on 2011-03-01 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever find yourself struggling to check a bill or tax on a payslip? The Trachtenberg Speed System provides a course in refining basic mathematics skills to tackle large sums before simplifying to increase concentration and ability in day-to-day arithmetic. The Trachtenberg system has been described as the 'shorthand of mathematics' and only requires the ability to count from one to eleven. Using a series of simplified keys, it allows anyone to master numbers and calculations giving greater speed, ease in handling numbers and increasing accuracy. Jakow Trachtenberg believed that everyone is born with phenomenal abilities to calculate. He devised a set of rules that allows every child to make multiplication, division, addition, subtraction and square-root calculations with unerring accuracy and at remarkable speed. A perfect entry into gaining confidence with numbers.

Download or read book Short Cut Math written by Gerard W. Kelly and published by Courier Corporation. This book was released on 2014-11-18 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear, concise compendium of about 150 time-saving math short-cuts features faster, easier ways to add, subtract, multiply, and divide. Each problem includes an explanation of the method. No special math ability needed.

Download or read book Think Like A Maths Genius written by Michael Shermer and published by Souvenir Press. This book was released on 2011-09-01 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Did you know that it's easier to add and subtract from left to right, rather than the other way round? And that you can be taught to square a three-digit number in seconds? In Think Like A Maths Genius, two mathematicians offer tips and tricks for doing tricky maths the easy way. With their help, you can learn how to perform lightning calculations in your head, discover methods of incredible memorisation and other feats of mental agility. Learn maths secrets for the real world, from adding up your shopping and calculating a restaurant tip, to figuring out gambling odds (or how much you've won) and how to solve sudoku faster.

Download or read book Speed Mathematics written by Bill Handley and published by John Wiley & Sons. This book was released on 2011-01-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using this book will improve your understanding of math and have you performing like a genius! People who excel at mathematics use better strategies than the rest of us; they are not necessarily more intelligent. Speed Mathematics teaches simple methods that will enable you to make lightning calculations in your head-including multiplication, division, addition, and subtraction, as well as working with fractions, squaring numbers, and extracting square and cube roots. Here's just one example of this revolutionary approach to basic mathematics: 96 x 97 = Subtract each number from 100. 96 x 97 = 4 3 Subtract diagonally. Either 96--3 or 97-- 4. The result is the first part of the answer. 96 x 97 = 93 4 3 Multiply the numbers in the circles. 4 x 3 = 12. This is the second part of the answer. 96 x 97 = 9312 4 3 It's that easy!

Download or read book All the Math You ll Ever Need written by Steve Slavin and published by John Wiley & Sons. This book was released on 1999-03-29 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sharp mind, like a healthy body, is subject to the same ruleof nature: Use it or lose it Need a calculator just to work out a 15 percent service charge? Not exactly sure how to get the calculator to give you the figureyou need? Turn to this revised and updated edition of All the MathYou'll Ever Need, the friendliest, funniest, and easiest workoutprogram around. In no time, you'll have total command of all the powerfulmathematical tools needed to make numbers work for you. In adollars-and-cents, bottom-line world, where numbers influenceeverything, none of us can afford to let our math skills atrophy.This step-by-step personal math trainer: Refreshes practical math skills for your personal andprofessional needs, with examples based on everyday situations. Offers straightforward techniques for working with decimals and fractions. Demonstrates simple ways to figure discounts, calculatemortgage interest rates, and work out time, rate, and distance problems. Contains no complex formulas and no unnecessary technical terms.

Download or read book Cell Biology by the Numbers written by Ron Milo and published by Garland Science. This book was released on 2015-12-07 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Top 25 CHOICE 2016 Title, and recipient of the CHOICE Outstanding Academic Title (OAT) Award. How much energy is released in ATP hydrolysis? How many mRNAs are in a cell? How genetically similar are two random people? What is faster, transcription or translation?Cell Biology by the Numbers explores these questions and dozens of others provid

Download or read book Maths on the Back of an Envelope Clever ways to roughly calculate anything written by Rob Eastaway and published by HarperCollins. This book was released on 2019-09-19 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: ‘Another terrific book by Rob Eastaway’ SIMON SINGH ‘A delightfully accessible guide to how to play with numbers’ HANNAH FRY

Download or read book Math for Grownups written by Laura Laing and published by Simon and Schuster. This book was released on 2011-06-18 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever wish you'd paid more attention in math class? From third grade to senior year of high school, it went in one ear and out the other, didn't it? But now you're staring at the new washer and dryer, trying to figure out the percentage of sales tax on the purchase price. You multiply something by something, right? Or you're scratching your head, wondering how to compute the odds that your football team will take next Sunday's game. You're pretty sure that involved ratios. The problem is, you can't quite remember. Here you get an adult refresher and real-life context—with examples ranging from how to figure out how many shingles it takes to re-roof the garage to the formula for resizing Mom's tomato sauce recipe for your entire family. Forget higher calculus—you just need an open mind. And with this practical guide, math can stop being scary and start being useful.

Download or read book Dead Reckoning written by Ronald W. Doerfler and published by Taylor Trade Publishing. This book was released on 1993-09-01 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 with computers you'll learn a great deal about number theory and the art of efficient computer programming. —Martin Gardner

Download or read book Quick and Easy Math written by Isaac Asimov and published by . This book was released on 1964 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes shortcuts to use in solving problems in addition, subtraction, multiplication, division, decimals, and fractions.

Download or read book Frequency Selective Surfaces written by Ben A. Munk and published by John Wiley & Sons. This book was released on 2005-03-11 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: "...Ben has been the world-wide guru of this technology, providing support to applications of all types. His genius lies in handling the extremely complex mathematics, while at the same time seeing the practical matters involved in applying the results. As this book clearly shows, Ben is able to relate to novices interested in using frequency selective surfaces and to explain technical details in an understandable way, liberally spiced with his special brand of humor... Ben Munk has written a book that represents the epitome of practical understanding of Frequency Selective Surfaces. He deserves all honors that might befall him for this achievement." -William F. Bahret. Mr. W. Bahret was with the United States Air Force but is now retired. From the early 50s he sponsored numerous projects concerning Radar Cross Section of airborne platforms in particular antennas and absorbers. Under his leadership grew many of the concepts used extensively today, as for example the metallic radome. In fact, he is by many considered to be the father of stealth technology. "This book compiles under one cover most of Munk's research over the past three decades. It is woven with the physical insight that he has gained and further developed as his career has grown. Ben uses mathematics to whatever extent is needed, and only as needed. This material is written so that it should be useful to engineers with a background in electromagnetics. I strongly recommend this book to any engineer with any interest in phased arrays and/or frequency selective surfaces. The physical insight that may be gained from this book will enhance their ability to treat additional array problems of their own." -Leon Peters, Jr. Professor Leon Peters, Jr., was a professor at the Ohio State University but is now retired. From the early sixties he worked on, among many other things, RCS problems involving antennas and absorbers. This book presents the complete derivation of the Periodic Method of Moments, which enables the reader to calculate quickly and efficiently the transmission and reflection properties of multi-layered Frequency Selective Surfaces comprised of either wire and/or slot elements of arbitrary shape and located in a stratified medium. However, it also gives the reader the tools to analyze multi-layered FSS's leading to specific designs of the very important Hybrid Radome, which is characterized by constant band width with angle of incidence and polarization. Further, it investigates in great detail bandstop filters with large as well as narrow bandwidth (dichroic surfaces). It also discusses for the first time, lossy elements used in producing Circuit Analog absorbers. Finally, the last chapter deals with power breakdown of FSS's when exposed to pulsed signals with high peak power. The approach followed by most other presentations simply consists of expanding the fields around the FSS, matching the boundary conditions and writing a computer program. While this enables the user to obtain calculated results, it gives very little physical insight and no help in how to design actual multi-layered FSS's. In contrast, the approach used in this title analyzes all curves of desired shapes. In particular, it discusses in great detail how to produce radomes made of FSS's located in a stratified medium (Hybrid Radomes), with constant band width for all angles of incidence and polarizations. Numerous examples are given of great practical interest. More specifically, Chapter 7 deals with the theory and design of bandpass radomes with constant bandwidth and flat tops. Examples are given for mono-, bi- and tri-planar designs. Chapter 8 deals with bandstop filters with broad as well as narrow bandwidth. Chapter 9 deals with multi-layered FSS of lossy elements, namely the so-called Circuit Analog Absorbers, designed to yield outstanding absorption with more than a decade of bandwidth. Features material previously labeled as classified by the United States Air Force.

Download or read book Street Fighting Mathematics written by Sanjoy Mahajan and published by MIT Press. This book was released on 2010-03-05 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: An antidote to mathematical rigor mortis, teaching how to guess answers without needing a proof or an exact calculation. In problem solving, as in street fighting, rules are for fools: do whatever works—don't just stand there! Yet we often fear an unjustified leap even though it may land us on a correct result. Traditional mathematics teaching is largely about solving exactly stated problems exactly, yet life often hands us partly defined problems needing only moderately accurate solutions. This engaging book is an antidote to the rigor mortis brought on by too much mathematical rigor, teaching us how to guess answers without needing a proof or an exact calculation. In Street-Fighting Mathematics, Sanjoy Mahajan builds, sharpens, and demonstrates tools for educated guessing and down-and-dirty, opportunistic problem solving across diverse fields of knowledge—from mathematics to management. Mahajan describes six tools: dimensional analysis, easy cases, lumping, picture proofs, successive approximation, and reasoning by analogy. Illustrating each tool with numerous examples, he carefully separates the tool—the general principle—from the particular application so that the reader can most easily grasp the tool itself to use on problems of particular interest. Street-Fighting Mathematics grew out of a short course taught by the author at MIT for students ranging from first-year undergraduates to graduate students ready for careers in physics, mathematics, management, electrical engineering, computer science, and biology. They benefited from an approach that avoided rigor and taught them how to use mathematics to solve real problems. Street-Fighting Mathematics will appear in print and online under a Creative Commons Noncommercial Share Alike license.

Download or read book Estimation of the Time Since Death written by Burkhard Madea and published by CRC Press. This book was released on 2015-09-08 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimation of the Time Since Death remains the foremost authoritative book on scientifically calculating the estimated time of death postmortem. Building on the success of previous editions which covered the early postmortem period, this new edition also covers the later postmortem period including putrefactive changes, entomology, and postmortem r

Download or read book The Busyness Delusion written by Chris Gardener and published by Let's Tell Your Story Publishing. This book was released on 2018-06-17 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: When your business is a "job in disguise" and feels like a hamster wheel it's time to get smarter. How to have financial security, freedom and fulfilment ... without being so stupidly busy. When people find out you run your own business you know what they'll ask: "How's it going? Are you busy?" Somehow, "busy" has come to mean "successful." But you didn't wake up this morning thinking "my main aim today is to be as busy as possible!" You don't have your business "to be busy" ... so why DO you work so hard? We all have our businesses for the same reason. The same three reasons actually - to have financial security, freedom and fulfilment - the 3Fs. But these aren't the outcomes for most small businesses. Instead, the common experience feels like you're on a hamster wheel, where the hours are long and the rewards mediocre. Self-esteem is threatened and life, love and relationships impacted. This book explains why this happens and how to approach work in a smarter way, to have a better business with less busyness and more certain results, so you can get back to living and loving life again. How, by climbing off the hamster wheel and escaping The Busyness Delusion, you can take the easier, more certain route to turn your own business into one that does give you all 3Fs. It covers: Why the hustle method is seductive but flawed, and how to use a smarter approach Why most self-employed people unwittingly choose the hardest way to earn, and what the easier options are. How to overcome the biggest obstacle to a smarter business and better life. What financial security really means and how to achieve it quicker and more easily. How to get better results by applying a simple model of how the brain works to give you more control. How to eliminate your competition to make it easier to get better results. Providing a new framework, illustrated in clear diagrams and told through a compelling story, this book reveals why copying others creates the hamster wheel effect, and precisely what to do to have a business and life you deserve. "This book nails the problem with most small businesses. The solutions are time-tested principles, for the first time pulled together in an original and enjoyable way that's easy to understand and implement." Dan Sager