Mathemagics: How to Look Like a Genius Without Really TryingThis is addictive! These tricks are so easy to learn that they make calculating enjoyable. "Mathemagics" actually shows you how to add, subtract, multiply, and divide faster in your head than you can with a calculator, let alone using pencil and paper. Jaws will drop at the supermarket when you announce the cash register total before they've even had time to bag your order, eyes will pop at the restaurant when you know the exact tip without even appearing to think about it. But wait until you see how "Mathemagics" helps you conquer any nervousness you might have about math. In fact, you'll begin to love it. |
Contents
MENTAL DIVISION | 61 |
THE ART OF GUESSTIMATION | 83 |
A MEMORABLE CHAPTER | 117 |
Copyright | |
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Mathemagics: How to Look Like a Genius Without Really Trying Arthur Benjamin,Michael Shermer No preview available - 1998 |
Common terms and phrases
2-by-2 multiplication problems 2-digit addition 2-digit number 3-by-2 problem 3-digit square adding addition method addition problem arithmetic arrive Arthur Benjamin audience bers Bidder break carry numbers chapter check your answer Colburn column of numbers complement criss-cross method cube root decimal point divide divisible by 11 division problems easier easy Évariste Galois exact answer example factoring method figure final answer fingers following numbers following problem fraction George Parker Bidder give Here's illustrated larger number last digit last two digits learned left to right lems lightning calculators look magic square mastered math mathemagician mathematics memory mental calculation Michael Shermer million mnemonic multiple of 9 number is divisible number of digits numbers end numbers that add original number pencil-and-paper phonetic code practice prob quotient remainder remember round second number Shakuntala Devi skills solve sound square root STEP subtraction method Thomas Fuller thousand trick words Zerah Colburn