There are a few dozen questions about rounding numbers and percentages, which have some substance as the procedures can be tricky. There is no natural tag for them, as far as I can tell. They get tagged with something ridiculous up to analytic-number-theory. So I created the "rounding" tag as an experiment. Good/bad idea?

@900sit-upsaday Personally I have nothing against rounding tag. If someone disagrees, they will probably remove the tag or speak up on meta (or here). If there was not such tag, I would probably use arithmetic.