Subtraction flash cards are pretty cool, because they help equip your child for school! Make subtraction synonymous with fun. This is a set of flash cards kids are sure to enjoy! These Subtraction 0-12 Flash Cards contain 91 problems ranging from 0-0 to 12-12 in big bold bright numbers that are easy to read. At the top of each card is a small-print answer to the problem on the reverse side of the card. This set is perfect for home or school and is intended for children ages 6 and above. Do speed drills, play games, change it up!