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# Math Course 1

### Ch. 5 Review

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

Tell whether the number 41 is prime or composite. | prime |

At one time, 36 out of 50 regions in a country had lighthouses. This can be written as the fraction 36/50. How do you write this fraction as a decimal? | 0.72 |

Write the decimal 7.04 as a fraction or mixed number in simplest form. | 7 1/25 |

Write 38/7 as a mixed number. | 5 3/7 |

Write 7 15/17 as an improper fraction. | 134/17 |

Find the LCM of 9 and 6. | LCM is 18 |

List the first three multiples of the number. 31 | 31, 62, 93 |

List the first three multiples of the number. 12 | 12, 24, 36 |

Find the LCM of 9 and 5. | LCM 45 |

Find the LCM of 42 and 54 using prime factorization. | LCM 378 |

A store gives every 30th customer a $30 gift certificate. Every 42nd customer gets a $42 gift certificate. What number customer will be the first to receive both types of gift certificates? | 210th Customer |

What does GCF stand for? | Greatest Common Factor |

What is a Greatest Common Fractor (GCF? | The greatest of the common factors of two or more numbers. |

What is the product of a whole number and any nonzero whole number? | A multiple |

The ______ multiple is the smallest of the common multiples of two or more nonzero whole numbers. | least common |

An ______ fraction is any fraction in which the numerator is greater than or equal to the denominator. | improper |

When a number has another number as a factor, it is ______ by the other number. | divisible |

6 is a ______ number because its factors are 1, 2, 3, and 6. | composite |

Fractions that represent the same number are ______ fractions. | equivalent |

The least of the non-zero common multiples of two or more numbers. | Least Common Multiple (LCM) |

A whole number greater than 1 that has exactly 2 factors, 1 and itself. | Prime Number |

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swinsoa