Question

Using Significant Figures for Calculations. Select the answer with the correct number of significant figures for each calculation:

31.580+4.26=

a) 35.840
b) 35.81
c) 36.000
d) 35.8

Answer 1

The correct answer is option (a) 35.840.

Step-by-step explanation:

The correct answer to the calculation 31.580 + 4.26 is option (a) 35.840. This is because when adding or subtracting numbers, the result should have the same number of decimal places as the number with the fewest decimal places. In this case, 31.580 has three decimal places and 4.26 has two decimal places, so the result should have two decimal places.