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# Stack #213681

### Module 4-Math Vocabulary

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

Real Number | A number that is rational or irrational, not imaginary. |

Rational Number | A number capable of being expressed as an integer or a quotient of integers, excluding zero as a denominator. |

Irrational Number | Any number that cannot be expressed as the ratio of two natural numbers, Pi and the square root of 2 being familiar examples. |

Decimal | A linear array of digits that represents a real number, every decimal place indicating a multiple of a negative power of 10. |

Repeating Decimal | A decimal in which a pattern of one or more digits is repeated indefinitely. |

Terminating Decimal | A decimal that has only a finite number of nonzero digits to the right of the decimal point. |

Greatest Common Factor/Greatest Common Divisor | The largest integer that divides without a remainder into a set of integers. |

Least Common Multiple | The smallest quantity that is divisible by two or more given quantities without a remainder. |

Rounding | Expressed or designated as a whole number or integer; not fractional. |

Truncate | To shorten (a number)by dropping one or more digits after the decimal point. |

Expanded Notation/Scientific Notation | The representation of a number as the sum of a series of terms, each of which is written explicity as the product of a digit and the base of the number system raised to some power. a/k/a scientific notation. |

Exponential Form | Can be seen just as a way to write expressions like 8x8x8 in a more compact form. 8^3 is the exponential form. |

Percent | a ratio comparison of two quantities expressed by using 100 equal parts or hundredths; symbolized %. There are three major uses of percent; part of a whole, rate, and comparison of any two quantities. |

Created by:
Denise G.