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# Math Stuff

### Study stack for upcoming test.

Term | Definition |
---|---|

Prime Numbers | Numbers that have ONLY TWO factors: one and itself. |

Composite Numbers | Numbers that have more than two factors. |

Divisibility rule for 2 | If a number is even. |

Divisibility Rule for 3 | If the sum of the added digits is a multiple of three.. |

Divisibility Rule for 9 | If the sum of the added digits is a multiple of nine. |

Prime Factorization | Finding all prime factors of a number. |

Array | An arrangement of organized rows and columns. |

Maximum | The highest number in a set of data |

Minimum | The smallest number in a set of data. |

Range | The difference between the greatest and smallest number. |

Mode | The most frequent appearing number in a set of data. |

Median | The middle number in a set of data, find it by ordering the numbers from least to greatest. |

GCF | Greatest Common Factor. List the factors of a number to find its GCF. |

LCM | Least Common Multiple. List the multiples of number to find its LCM. |

Numerator | The top number in a fraction. |

Denominator | The bottom number in a fraction. |

Right Angle | An angle measuring 90 degrees. |

Obtuse Angle | Measures between 91 and 179 degrees. |

Acute Angle | Less than 90 degrees. |

Straight Angle | 180 degrees. |

Isosceles Triangle. | An angle with two equal sides. |

Scalene Triangle | An angle with no equal sides. |

Finding Circumference | Pi x diameter |

Finding Area | B x H |

Order of Operations | System:Please Excuse My Dear Aunt Sally |

Created by:
Olympian