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# Chapter 1

### Pre-Algebra

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

algebraic expression | an expression that contains at least one variable |

variable | a letter that represents a number that can change |

coefficient | a number that is multiplied by a variable |

constant | a value that does not change |

evaluate | to find the numerical value of an expression |

substitute | to replace a variable with a number or expression |

integer | the set of whole numbers and their opposites |

additive inverses | the opposite of a number |

opposites | two numbers that are equal distance from zero on a number line |

absolute value | a number's distance from zero on a number line |

equation | a mathematical sentence that uses an equal sign |

inverse operation | operations that undo each other |

solution | the value or values that make an expression true |

equivalent | having the same value |

reciprocal | one of two numbers whose product is one |

PEMDAS | a way to remember the order of operations |

quotient | the answer to a division problem |

product | the answer to a multiplication problem |

sum | the answer to an addition problem |

difference | the answer to a subtraction problem |

Created by:
MrsGreen08