Knowing how the points are calculated is also very important. The value of the cards determines the winner in the majority of Rummy variations. While facerummy goid cards (Kings, Queens, & Jacks) are worth ten points each, number cards usually retain their face value. The way that aces are used in a meld determines whether they are worth one point or eleven points. Knowing these guidelines improves gameplay & enables players to make wise choices when it's their turn.