# Dimensional Analysis: Question Preview (ID: 22947)

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Which ratio would allow you to convert from 45 cm into feet? |
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a) 1 inch/2.54 cm....because cm would cancel out | b) 2.54 cm/1 inch...because cm would cancel out | c) 1 inch/2.54 cm...because feet would cancel out. | d) 2.54 cm/1 inch...because cm would cancel out. | |

How do you get units (or numbers) to cancel out? |
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a) They are matched side by side. | b) They are multiplied. | c) There is a match on the top and bottom of the fraction | d) They are both on the bottom of the fractions. | |

If there is a number on the top of a fraction and a number on the bottom of the fraction..... |
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a) You clearly have a multiplication problem. | b) Obviously you have a cross multiplication problem. | c) Most definately you have to square the top and bottom | d) You certainly must divide the top by the bottom number. | |

To convert from 500 seconds to minutes you would use.... |
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a) 60 seconds/1 minute | b) 1 minute/60 seconds | c) 60 minutes/1 second | d) 1 second/60 minutes | |

Dimensional analysis is a method used to.... |
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a) make kids really mad. | b) cure mental illness. | c) convert from one unit into another unit. | d) torture mankind. | |

In order to cancel units..... |
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a) you need two matches in your numerator. | b) you need a match on top and bottom. | c) you need to scratch out whatever you want. | d) you need to multiply in the correct order. | |

Why do you suppose we put our starting number and unit over 1? |
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a) because it's in the Bible. | b) to make it into a fraction | c) to make more work for kids. | d) to give it one leg to stand on. | |

The final units of your answer in a dimensional analysis problem are located..... |
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a) on the top of your final conversion. | b) on the bottom of your final conversion | c) on the top of your starting number and unit. | d) completely made up. | |

When multiplying fractions you should: |
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a) multiply all numbers no matter where their location is. | b) multiply numbers on top and divide by the numbers on the bottom. | c) cross multiply all numbers. | d) cancel out all numbers to make it easy to deal with. | |

1000 mL is equal to ___________. |
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a) 1 Liter | b) 100 Liters | c) 10 dKL | d) 1 meter | |

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