After carrying out the following operations, how many significant figures are appropriate to show in the result? (13.7 + 0.027)÷ 8.221
A)1
B)2
C)3
D)4
E)5

Question

Quizplus · Accepted Answer

The first addition operation has two significant figures (the 1 and the 3). The second number has three significant figures (the 2, the 7, and the 0 after the decimal point). The division operation involves the number 8.221, which has four significant figures. When dividing, you should always round your answer to the same number of significant figures as the number with the fewest significant figures. In this case, two of the numbers involved have two significant figures, so the answer should also have two significant figures.

After Carrying Out the Following Operations, How Many Significant Figures