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# unit3: expressions

### unit 3: expressions

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

Algebraic expression | A mathematical phrase involving at least one variable and sometimes numbers and operation symbols. |

Associative Property of Addition | The sum of a set of numbers is the same no matter how the numbers are grouped. |

Associative Property of Multiplication | The product of a set of numbers is the same no matter how the numbers are grouped. |

Coefficient | A number multiplied by a variable in an algebraic expression. |

Commutative Property of Addition | The sum of a group of numbers is the same regardless of the order in which the numbers are arranged. |

Commutative Property of Multiplication | The product of a group of numbers is the same regardless of the order in which the numbers are arranged. |

Constant | A quantity that does not change its value. |

Distributive Property | The sum of two addends multiplied by a number is the sum of the product of each addend and the number. |

Exponent | The number of times a number or expression (called base) is used as a factor of repeated multiplication. Also called the power. |

Like Terms | Terms in an algebraic expression that have the same variable raised to the same power. Only the coefficients of like terms are different. |

Order of Operations | The rules to be followed when simplifying expressions. |

Term | A number, a variable, or a product of numbers and variables. |

Variable | A letter or symbol used to represent a number or quantities that vary |

Created by:
mcrippen