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# 2013-7thMathPTVocab1

### SHMS 7th Grade Math Powertime Vocab 1

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

Additive Inverse | The sum of a number and its additive inverse is zero. Example 5 and -5 |

Multiplicative Inverse | Numbers are multiplicative inverses of each other if they multiply to equal the identity, 1. Example 2/3 and 3/2 |

Absolute Value | The distance between a number and zero on the number line. |

Integers | The set of whole numbers and their opposites {...-3, -2, -1, 0, 1, 2, 3...} |

Natural Numbers | The set of numbers {1, 2, 3, 4,...}. These numbers can also be called counting numbers. |

Negative Numbers | The set of numbers less than zero. |

Opposite Numbers | Two different numbers that have the same absolute value. Example -5 and 5 |

Positive Numbers | The set of numbers greater than zero. |

Rational Numbers | The set of numbers that can be written in the form a/b where a and b are integers and b is not equal to 0. |

Repeating Decimal | A decimal number in which a digit or group of digits repeats without end. Example .3333… |

Terminating Decimal | A decimal that contains a finite number of digits. |

Zero Pair | Pair of numbers whose sum is zero. Example 3 + -3 = 0. |

Variable | A symbol, usually a letter, which is used to represent one or more numbers. |

Numerical expression | An expression consisting of numbers and operations. |

Created by:
hbogue