## Mathematical puzzles and pastimes |

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### Contents

CHAPTER PAGB 1 These Matches Are Not For Burning | 1 |

A Billiard Ball Computer | 10 |

The Notch Arithmetic | 22 |

Copyright | |

13 other sections not shown

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### Common terms and phrases

5-gallon container airplane angle approximately arbitrarily selected unit base billiard ball circle rolls circumference CM CM CM complete turn construct counting cushion decimal number decimal system denoted diameter difference disk divisible by 9 earth electronic computing devices equal evenly divisible example expression five five-system of numeration four gallons given number Gregorian Calendar halving hypocycloid inking point intersection large circle leap length mark mathematical meration multiplication number is evenly number of edges number written Numbers Numbers Numbers numerical values obtain octal odd number OJ OJ Perpetual Calendar place value position problem Purse number quadratic equation radius remainder represents right triangle rolling circle Roman rotating shown in Figure small circle solution square root straight line segment subtracted symbol system of numeration Th F three-system of numeration toothpicks from Figure translated trigonometry two-six two-system of numeration vertex vertices weights Write the number