Perform the following set of operations and choose the alternative that expresses the result to the proper number of significant figures.
A)65.94
B)65
C)70
D)65.9

Question

Perform the following set of operations and choose the alternative that expresses the result to the proper number of significant figures. 
A)65.94 
B)65 
C)70 
D)65.9

Quizplus · Accepted Answer

There are no decimals in the original set of operations, so we must round the answer to the nearest whole number. The correct answer to the set of operations is 66. However, since the number 66 only has two significant figures, we must round it to one significant figure, which gives us 70. The only answer choice that is closest to 70 is D, which is 65.9. Therefore, the best choice is D.

Perform the Following Set of Operations and Choose the Alternative