Big Difference ( 3 games )
A subtraction game using two-digit numbers to 20. This game is played as a rummy game i.e. players collect a card, attempt to match it with subtraction sums on the cards in their hand and then discard a card. A checking card, to be used by another player or helper, is included on the back of the instruction card. 3 games of 84 cards, instructions and a checking card.