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# Important Math Facts

### Notecards to learn important math facts for testing and life

Question | Answer |
---|---|

How many inches in one foot? | 12 inches in 1 foot |

How many feet in one yard? | 3 feet in 1 yard |

How many inches in 1 yard? | 36 inches in 1 yard |

How many days are there in one year? | 365 days in 1 year |

What does "ANNUAL" mean? | 1 years time |

How many weeks are there in 1 year? | 52 weeks in 1 year |

What does "TWICE" mean? | times two or x 2 |

What are the first 10 perfect squares? | 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 |

What are perfect squares? | Number times itself two times x to second power, exponent of 2 |

What are Prime Numbers? | Numbers that have exactly 2 factors, 1 and the number itself. |

What are Composite Numbers? | Numbers that have 3 or more factors |

What are Whole Numbers? | Numbers starting at 0 that have no decimals or fractions. examples: 0, 1, 2, 3, 4, 5, 6 . . . . |

What are Natural or Counting Numbers? | Whole Numbers begin at the number 1. Always start counting at 1, 2, 3, 4 . . . |

What are Integers? | Whole numbers that are negative, zero, and positive. Examples: . . . -3, -2, -1, 0, 1, 2, 3 . . . . . |

What does DIVISIBILITY mean? | A whole number is divisible by a smaller whole number when the answer is a whole number, no decimals or fractions |

What are Factors? | Factors are smaller numbers that divide evenly into a larger number and two factors mulitiply to equal a larger whole number. LIST factors from least to greatest |

Greatest Common Factor--GCF | This is the largest factor that 2 or more larger whole numbers all have the same. |

How do you find EVEN numbers? | Even numbers end in 0, 2, 4, 6, or 8 and are DIVISIBLE by 2. means divides evenly. 2 is a factor of an even number. |

How do you find ODD numbers? | Odd numbers end in 1, 3, 5, 7, 0r 9 and are NOT DIVISIBLE by 2. 2 is not a factor of an odd number. |

What two whole numbers are neither prime nor composite? | 0 and 1 are neither prime nor composite |

What is the SMALLEST PRIME number? | 2 is the smallest prime number. |

What is the ONLY EVEN PRIME number? | 2 is the only EVEN PRIME number. |

Created by:
LMCOFFMAN