If you feel shaky with your ability to apply the rules for significant figures, review Sig Fig's Guide to Significant Figures. You can also get in some additional practice by doing the relevant Practice Questions at the Ch. Reviews link above.

Now take a short diagnostic quiz on significant figures. As a diagnostic quiz, it counts as a homework grade (E category) rather than a quiz grade. Like any quiz, you have to work alone, but unlike most quizzes, you may use your course resources (text, web pages, notes). The 10-question quiz is on WebAssign. Go ahead with the quiz now.  It should take less than 10 minutes.