Anonymous

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

chemistry problem

### 5 Answers

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- Dr WLv 78 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)

- Anonymous8 months ago
Trick question - it's 148 due to the two decimal places.

- az_lenderLv 78 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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- ChristianLv 58 months ago
132. When adding/subtracting sig figs you go with the fewest decimal places.

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