Significant digits are in the curriculum for both my Chemistry and my Physics class, and all my Calculus students have taken at least Chemistry. It also pops up in the school's Precalculus class (which I do not now teach). Although significant digits are not in the Calculus curriculum I get many questions about them.
Should I continue my present practice of ignoring sig digs in my Calculus class (and stating the desired precision of approximate answers in quizzes and tests) or should I include them in some way?
Note that I am not asking if sig digs should be used in science classes: that is a given for now.