## Figuring: The Joy Of NumbersThere is a range and richness to numbers. They can come alive, cease to be symbols written on a black board, and lead the reader into a world of intellectual adventure where calculations are thrilling. In Figuring: The Joy of Numbers, Shakuntala Devi dramatizes the endless fascination of numbers and their ability to amaze and entertain. She offers easy-to-learn short cuts on how to add long columns in your head, multiply, divide, and find square roots quickly, almost magically. Fractions, decimals, and compound interest become clear and easy to deal with. The author takes delight in working out huge problems mentally, and sometimes even faster than computers. In Figuring she shares her secrets with you. |

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Amazing logic behind each and every number game

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All 6 reviews »Thank you google for such a good book on numbers

### Contents

Introduction | 9 |

Some Terms Defined | 11 |

The Digits | 15 |

Multiplication | 31 |

Addition | 48 |

Division | 52 |

Subtraction | 60 |

GCM and LCM | 62 |

Cubes and Cube Roots | 77 |

Percentages Discounts and Interest | 87 |

Decimals | 94 |

Fractions | 99 |

The Calendar | 104 |

Some Special Numbers | 112 |

Tricks and Puzzles | 131 |

Conclusion 157 | |

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### Common terms and phrases

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