To practice addition with three addends, use three cards. A player shuffles the deck and places five cards face-up on the playing surface. This player leaves the rest of the deck facedown and then turns over and lays down the top card from the deck. The number on this card is the number to be named. A successful player also replaces those three cards by drawing from the top of the facedown deck.
Unsuccessful players lose their turns.
But they turn over and lay down the top card from the facedown deck, and the number on this card becomes the new number to be named. Play continues until all facedown cards have been turned over. The player who has taken the most cards at the end wins. The number to be named is 6. She replaces the 4 and 2 cards with the top two cards from the facedown deck and then turns over and lays down the next card to replace the 6.