How many significant figures are there in the answer to the following problem? (3.335 × 6.500)+ 0.940 = ?
A)one
B)two
C)three
D)four

Question

Quizplus · Accepted Answer

First, we perform the multiplication: 3.335 × 6.5 = 21.7275. Then we add 0.940 to get a final answer of 22.6675. Since 3.335 has four significant figures, 6.500 has four significant figures, and 0.940 has three significant figures, the least number of significant figures in the problem is three. Therefore, the answer should also have three significant figures, which is achieved by rounding to the nearest thousandth. Thus, the answer is 22.668, which has four significant figures. The correct choice is D, four.

How Many Significant Figures Are There in the Answer to the Following