Significant Figures in Data Suppose I have two recorded Molarity of a certain solution. And the data I have are: 0.092 M and 0.095 M --- which both has 2 significant figures. If I were asked to get the AVERAGE MOLARITY of my substance, then I'd do: (0.092 M + 0.095 M)/2 = My AVG. MOLARITY. Since 2 is an exact number, I will not base the SF of my final answer to that number. Instead, I'd base it to my Molarities, but I know I should do the addition first, since they're enclosed in a parenthesis. (following PEMDAS) 0.092 M + 0.095 M = 0.187 M ----- (It should have 3 decimal places, since that is my least decimal place in my data) Then, dividing my answer by 2, should I report it as: 0.0935 M ----- since 0.187 has 3 SF OR 0.094 M ------- since my initial working data only has 2 SF? Which one is more correct? Which one should I follow and why?