54.00+78= _______ give the answer to the correct number of significant figures?
- Dr WLv 71 month 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
.. the answer is reported to the 1's column
.. 54.00 + 78 = 132 (with 3 sig figs, precise to the 1's column)
- PearlLv 71 month ago
i think its 132
- HernandoLv 61 month ago
Trick question - it's 148 due to the two decimal places.
- az_lenderLv 71 month 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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- 1 month ago
132. When adding/subtracting sig figs you go with the fewest decimal places.