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Math Help - Could someone verify these answers? (Significant Digits)

  1. #1
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    Could someone verify these answers? (Significant Digits)

    Hi,

    The figures are:

    (1.222x10^5)(3.27x10^3) = 3.40x10^8

    12.87 - 11.305 + 7.1 = 8.7

    3.0/.12345 = 24

    The fifth root of -5.113x10^15 = -1386

    Thanks!
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  2. #2
    MHF Contributor ebaines's Avatar
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    Re: Could someone verify these answers? (Significant Digits)

    All good except for the first. 1.222 x 3.27 is not 3.40.
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  3. #3
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    Re: Could someone verify these answers? (Significant Digits)

    It is correct to "three significant figures".
    Last edited by HallsofIvy; September 7th 2013 at 07:17 AM.
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