Math

Some of these conversions have an error. If there is an error, explain the nature of the error and complete the conversion correctly. (I redid all the questions and only the first one looked incorrect to me. Can you look it over and point out any other mistakes? Thank you)

a) 23cm*100cm/1m (I believe the cm and m should be flipped so that it can be cancelled)

b) 5m*1000mm/5m = 5000mm (no errors here?)

c) 7yd*1760mi/1yd = 12320mi (no errors here?)

d) 31ft*12in/1ft = 372in (no errors here?)

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  1. always multiply by one (top equal to bottom) so the units come out with the unwanted ones canceling

    23 cm * (1 meter / 100 cm)
    note cm cancels top and bottom, left with meters
    besides we all know 23 cm = 0.23 meters :)

    b) NO !!
    1000 mm / one meter = one

    5 m * (1000 mm / 1 m) = 5000 mm

    c) Give me a break. You know surely that a mile is longer
    r than a yard !!!

    7 yd * (1 mile / 1760 yards) = .003977 mi

    d) Yes !!!!!

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    posted by Damon

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