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# Unit 1 Vocabulary

### Number Fluency NS.1-NS.4

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

RATIONAL NUMBER | Any number that can be shown as a ratio/fraction |

RECIPROCAL | One of two numbers whose product is 1; also called multiplicative inverse The reciprocal of 2/3 is 3/2 |

INVERSE OPERATION | Operations that undo each other; addition and subtraction or multiplication and division |

DIVIDEND | The number to be divided in a division problem; 8/4=2...8 is the dividend |

DIVISION NOTATION | various methods used to show the mathematical operation of division. |

DIVISOR | The number you are dividing by in a division problem; 8/4=2...4 is the divisor |

QUOTIENT | The result when one number is divided by another; 8/4=2... 2 is the quotient |

ADDEND | A number added to one or more other numbers to form a sum. For example, in the expression 4 + 6 + 7, 4, 6, and 7 are the addends. |

SUM | The result of adding two or more numbers. |

DIFFERENCE | The result of subtracting two or more numbers. |

FACTOR | A number that is multiplied by another number to get a product. |

MULTIPLE | The product(answer) of any number and another number is a multiple of that number. 30, 40, and 90 are multiples of 10. |

PRODUCT | The result (answer) when two or more numbers are multiplied. |

DISTRIBUTIVE PROPERTY | A property that states, if you multiply a sum (answer of addition) by a number, you will get the same result if you multiply each addend by that number and add the products. 5 x 21 = 5(20 + 1) = (5 x 20) + (5 x 1) |

GREATEST COMMON FACTOR (GCF) | The largest common factor of two or more given numbers. The GCF of 27 and 45 is 9. |

LEAST COMMON MULTIPLE (LCM) | The smallest number, other than zero, that is a multiple of two or more given numbers. The LCM of 6 and 10 is 30. |

PRIME FACTORIZATION | A number written as its prime factors. 10 = 2 x 5 24 = 2 x 2 x 2 x 3 |

Created by:
toniepritchett