Using the rules of significant figures, calculate the following: 12.67 + 13.005 =
A) 25.675
B) 25
C) 20
D) 25.68
E) 26

Question

Quizplus · Accepted Answer

When adding or subtracting, the number of decimal places in the answer should match the number with the fewest decimal places. In this case, 12.67 has 2 decimal places and 13.005 has 3 decimal places, so the answer should have 2 decimal places. When we add the two numbers, we get 25.675. Rounding to 2 decimal places gives us 25.68.

Using the Rules of Significant Figures, Calculate the Following: 12