Rounding on Exams

[Isabel Nakoud 4D]

While completing a practice test I noticed sometimes my answers were off by .001 and I am worried this will affect my scores on the exam.

How accurate do we need to be on the test before we get points deducted?

For example, if my answer was 3.21 x 10^27 and the answer key says it is 3.22 x 10^27 , will I still get full points for that question on the exam?

Thank you!

[Tuong Nguyen 2I]

For the most part, you should get partial credit because the TA grading your test should be able to see that you were on the right track and interpreted the question correctly. If your main problem is being off by a hundredth from the correct answer, it could be your use of sig figs and rounding too early on in the calculations.