Multiples of 3 SLAM! is a great card game to practice identifying multiples of 3 facts.
Setup: Copy on cardstock/tag board, laminate, and cut out each card.
Pass out all of the cards to the players. The person who has the start card, slams it down. Then look for the product of the question, the person who has the correct answer will SLAM it down, then continue by looking at the next answer and so on... (there are also WILD cards, that can be played at any time) The player who SLAMS down all their cards first wins! Shuffle and play again!