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# Unit 4 Vocab for CV

### Unit 4 Vocabulary for EveryDay Math

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

Expression | A grouping of math symbols that may include numbers, variables, operation symbols, and grouping symbols |

simplify an expression | to rewrite an expression by combining like terms and constants. |

base | the number that is raised to a power. |

exponent | a number used in exponential notation to tell how many times the base is used as a factor. |

variable | A LETTER or other symbol that can be replaced by any number |

algebraic expression | An expression that contains a VARIABLE. |

substitute | To replace one thing with another-like replacing variables with numbers |

coefficient | The number, or CONSTANT factor, in a variable term. |

equation | A number sentence that contains an EQUAL sign. |

open sentence | A number sentence with a variable that is either true or false depending on what value is substituted for the variable. |

mean absolute deviation | In a data set, the average of distances individual data points are from the average of the whole data set. |

Distributive Property | A property that relates multiplication and addition or subtraction. this property gets its name because it “distributes” a factor over terms inside parentheses. |

Associative Property | A property of multiplication (but not division) that says that when you multiply three numbers, you can change the grouping without changing the product. |

Commutative Property | A property of addition ( but not subtraction) that says that changing the order of the numbers being added does not change the sum. |

inequality | A number sentence with > < ≥ ≤ or ≠ |

relation symbol | A symbol such as < , > , and = used to express a relationship between two quantities |

solution set | The set of all ANSWERS for an equation or inequality |

magnitude of a number | The size of a number: the number’s distance from 0. |

absolute value | The distance between a number and 0 on the number line. |

Created by:
staufferh