Free Professional Development
Learn how to add (or subtract) two or more numbers and report the sum using the proper number of significant figures.
Knowing how to properly add and subtract numbers with different levels of accuracy is important to ensure that the reported answer correctly reflects the levels of uncertainty that were inherent in the original measurements.
29 Sophia partners guarantee credit transfer.
310 Institutions have accepted or given pre-approval for credit transfer.
* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.
