If the following numbers are from measurements and we want to evaluate to the appropriate level of accuracy.

18 x 2.1 - 3.6 x 0.54
------------------
8.6 x 2.9 + 5.7 x 9.2

In my book, the answer is 0.463 but shouldn't it be 0.46 since the least number of significant figures is 2?

Question

If the following numbers are from measurements and we want to evaluate to the appropriate level of accuracy.

18 x 2.1 - 3.6 x 0.54
------------------
8.6 x 2.9 + 5.7 x 9.2

In my book, the answer is 0.463 but shouldn't it be 0.46 since the least number of significant figures is 2?

owlfred · Answer

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

anonymous · Answer

yes but 0.54 x 3.6 gives you a third decimal place