It's the classic card game of war, but with a twist! As you play your cards, you must solve the addition or subtraction equation to discover if your card is greater than, less than or equal to your opponent's card. Collect the most cards and win! Cards cover addition and subtraction facts from 0 through 10. Includes 54 double-sided, self-checking game cards, activity card and answer card. Cards measure 3-1/8 x 5-1/4". For grades 1 and up.