Question

Multiply 2.079x10^2m by 0.082x10^-1 , taking into account significant figures

Answer 1

There's probably a sig dig calculator online, maybe even excel has one.

Answer 2

The answer above is incorrect. 2.079 has 4 significant digits (no place holders). 0.082 has only TWO significant figures. The 0.0 is a placeholder and the 82 are significant. The rule is to take the lesser number of sig figs when multiplying. Thus, you get your answer as 1.7

Answer 3

Ok, so anyone else want to chime in here?