We take turns in being the dealer – 5 hands each.We don’t bet – it is just all about the numbers!.There are many variations on the rules for 21 Card Game, but here is how we play: I am happy to play with him as it is a quick game to play and it helps work on his mental maths. We have been playing this game for a while and he really enjoys it. One of my brother in laws is a keen card player and after watching a game of 21, master 6 quickly wanted to be taught how to play. He is always wanting me to give him sums to do.