Our fast-paced subtraction game boosts math fluency! Kids race to complete their game cards, rolling the dice and using the values to fill in missing numbers in all positions. The game includes 8 double-sided write & wipe game cards, 4 write & wipe markers, 6 dice, a dice cup and a guide. For up to 4 players. The cards are self-checking; each measures 5" x 7".