How do you use significant figures to add 56.02 - 4.6 + 100.648?

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Answer 1 · 2016-12-20T23:44:09

#152.1#

Since #4.6# is only significant to the tenths place, our answer will be rounded to the tenths place as well. See below for calculations:

#56.02-4.6=51.42#

#51.42+100.648=152.068#

Now we simply round to the tenths place due to the fact that our answer should only be significant to the tenths place.

#152.068# turns into #152.1#

#152.1# is the significant form of this sum.

Answer: #152.1#