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# Gr. 7 Chap. 1

### Mrs. Bradfield 7th Grade Math Chapter 1

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

base | when a number is raised to a power, the number that is used as a factor |

exponent | a number that indicates how many times the base is used as a factor. |

power | a number produced by raising a base to an exponent |

scientific notation | a method of writing very large or very small numbers using powers of 10 |

order of operations | a rule for evaluating expressions |

associative property | for all real numbers, the sum is the same, regardless of their grouping. |

commutative property | two or more numbers can be added in any order without changing the sum. |

identity property | the sum of zero and any # is the #: the product of 1 and any number is the #. |

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

constant | a value that does not change |

evaluate | to find the value of a numerical or algebraic expression. |

variable | a symbol used to represent a quantity that can change |

coefficient | the number that is multiplied by the variable in an algebraic expression |

term | the parts of an expression that are added or subtracted. |

equation | a mathematical sentence stating that two expressions are equivalent. |

solution | a value or values that make an equation or inequality true |

inverse operations | operations that undo each other. |

absolute value | the distance of a number from zero on a number line, shown by | |. |

integer | the set of whole numbers and their opposites, including zero. |

opposite | two numbers that are an equal distance from zero on a number line. |

composite number | a number greater than 1 that has more than two whole-number factors |

prime factorization | a number written as the product of its prime factors |

prime number | a whole number greater than 1 that has exactly two factors: itself and 1. |

GCF | the largest common factor of two or more numbers. |

LCM | the least number, other than zero, that is a multiple of two or more given numbers. |

multiple | the product of any number and any nonzero whole number is a multiple of that number |

equivalent fractions | fractions that name the same amount or part |

improper fractions | a fraction in which the numerator is greater than or equal to the denominator. |

mixed number | a number made up of a whole number that is not zero, and a fraction. |

repeating decimal | a decimal in which one or more digits repeat infinitely. |

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alissa2222