Figuring: The Joy Of NumbersFiguring: The Joy Of Numbers by Shakuntala Devi, is a book that teaches readers a series of computing shortcuts, which will not only reduce calculation time, but also help to develop an interest for the subject of mathematics.In Figuring: The Joy Of Numbers, renowned mathematician Shakuntala Devi, teaches readers about the wonders which can be sought by utilizing easy calculation methods. Devi's book will help readers calculate faster and easier This book will teach readers how to proceed forward with different types of challenging calculations, with the aim of increasing precision as well as speed, without compromising the correctness of the result. In order to understand the techniques prescribed in the text, readers are required to have a basic knowledge of arithmetic. Devi states that initially the problems might seem too complicated or out of reach, but with time and practice readers will definitely acquire the skill to solve mathematic problems in an expedient and precise manner. |
Contents
Introduction | 9 |
The Digits | 15 |
GCM and | 62 |
Squares and Square Roots | 71 |
Cubes and Cube Roots | 77 |
Percentages Discounts and Interest | 87 |
Decimals | 94 |
Fractions | 100 |
99 | 124 |
Tricks and Puzzles | 147 |
Conclusion | |
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Common terms and phrases
60 days adding arrive asked to multiply break brought 5 chapathis calculation carry cent of 460 century check number coins column common denominator compound interest corresponds cube root cubic number decimal places decimal point discount divide the number dividend divisor example extracting factors fifth root Find the GCM four fractions gives a number halved improper fraction instance to find largest number last digit least common multiple mathematical mentally merchant method millionaire month multiplicand multiplication tables multiply the number nines leaves number being subtracted number ends number is divisible number of marbles number of places obtained original number perfect number pieces pressure cookers prime number problem quarter quotient read as 16 remainder remember root ending sequence Shakuntala Devi special number square numbers square root temple elephant tens digit tens figure top line total number triangle number units digit units figure water lilies whole number write