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# Fast Math Facts

### How to learn MATH FASTER and MORE FUN!

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

Divisibility rule for 2 | If a number is even |

Divisibility rule for 3 | If the sum of digits is divisible by 3 |

Divisibility rule for 4 | If the last two digits are divisible by 4 |

Divisibility rule for 5 | If number ends in 0 or 5 |

Divisibility for 6 Short Version | If number is even and is divisible by 3 |

Divisibility rule for 9 | If sum of digits is divisible by 9 |

Divisibility rule for 10 | If last digit ends in 0 |

Exponents | Tells us how many times the base is used as a factor |

Base | The number that we are multiplying |

Power | When we are multiplying a base times an exponent |

Prime Number | Has only two factors, 1 and itself |

Composite Number | Has more than two whole number factors |

Prime Factorization | Taking a composite whole number and breaking it down into its prime factors |

Factors | The numbers that we multiply |

Equivalent Fractions | Name same amount; equal |

Numerator | Tells us the number of parts being asked about |

Denominator | Total number of equal parts |

Facts #1 | 1. When listing factors, you should never have a factor that is greater than the initial number. 2. Every even number that is greater than 2 is composite. 3. One is neither prime nor composite. 4. Divisibility rules help make division easier. |

Facts #2 | 5. They help us know if we will or will not have a remainder when dividing. 6. When listing the multiples of a number you should NEVER have a multiple less than that number. |

Multiple | The product of a number when multiplied by a counting number. |

Least Common Multiplfe | The smallest number. |

Fact #3 | 7. You're never going to be asked the least common factor and the greatest common multiple because 1. The number would be 1 & 2. Numbers are infinant. |

Divisibility Rule for 6 Long Version | If the number is even and the sum of the digits is divisible by 3, then the number is divisible by 6. |

Created by:
mjys02