How do dice work in backgammon?

In backgammon you roll two dice on every turn, and each die is a separate move you can make with one or two checkers. If you roll a five and a three, you may move one checker five points and another three, or move a single checker three then five, as long as the point it passes through is open to you. You must use both numbers if there is any legal way to do so; if you can only play one, you play that one and forfeit the other. Rolling the same number on both dice is called doubles, and it lets you move four times instead of twice.