95.8 g + 25.555 g + 37.60 g?

Question

It's chem

Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter the correct number of significant figures.

95.8 g + 25.555 g + 37.60 g

i've tried 1.59e2

tried 1.60e2

tried 2.00e2

tried. 1.58e2

tried everything

someone enlighten me?

Answer 1

1.590e2  The result of the addition to the correct number of sig figs is 159.0 (all the numbers have a tenths place).  You can't lose that zero on the right.

Answer 2

I was taught to use the least amount of sig figs, which would be three, so i think you would round them first and then add them together for a final answer of 1.59e2. You say you tried that? Well, if that isn't right, then I guess it's changed since I was in school...

Answer 3

i hate chem