# Real Numbers: Question Preview (ID: 20874)

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Which number below is not a natural number? |
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a) 8/4 | b) square root of 81 | c) 15% | d) 3 squared | |

Which number below is not a rational number? |
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a) square root of 72 | b) 1/3 | c) 8.5 | d) 22% | |

Which number below is a whole number, and an integer, but not a natural number? |
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a) square root of 121 | b) 50% | c) 6/3 | d) 0 | |

Which number below is not an irrational number? |
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a) pi | b) square root of 18 | c) square root of 22 | d) square root of 36 | |

Rational numbers are numbers that can be expressed as a __________? |
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a) repeating decimal | b) ratio | c) terminating decimal | d) all answers are true | |

Irrational numbers are _____________. |
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a) ratios | b) repeating decimals | c) terminating decimals | d) decimals that never end or repeat | |

Whole numbers and their opposites are called _________________. |
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a) Integers | b) Natural Numbers | c) Counting Numbers | d) Irrational Numbers | |

Counting numbers are also called _______________. |
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a) Natural Numbers | b) Integers | c) Whole Numbers | d) Irrational Numbers | |

Perfect squares are ________________________. |
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a) rational numbers | b) fractions | c) irrational numbers | d) decimals | |

When you are multiplying a number by itself you are _______________ the number. |
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a) squaring | b) adding | c) finding the square root of | d) dividing | |

When you are finding the square root of a number, you need to ______________. |
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a) Divide by 2 | b) multiply a number by itself | c) figure out what number times itself gives you that number | d) divide by 4 | |

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