Anonymous
Anonymous asked in Science & MathematicsChemistry · 8 months ago

54.00+78= _______ give the answer to the correct number of significant figures?

chemistry problem

5 Answers

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  • Dr W
    Lv 7
    8 months ago

    in mult/div, the answer is limited to the same # of sig figs as the factor with the least # of sig figs

    in add/sub, the answer is limited to the same precision as the addend with the lowest precision

    ********

    this problem is addition, so we go by precision

    .. 54.00 is precise to the 0.01's column

    .. 78 is precise to the 1's column

    so

    .. the answer is reported to the 1's column

    so

    .. 54.00 + 78 = 132 (with 3 sig figs, precise to the 1's column)

  • Pearl
    Lv 7
    8 months ago

    i think its 132

  • Anonymous
    8 months ago

    Trick question - it's 148 due to the two decimal places. 

  • 8 months ago

    132 because 78 is correct in the units place.

    If your teacher says round off to 130, I say he/she is RONG

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  • 8 months ago

    132. When adding/subtracting sig figs you go with the fewest decimal places.

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