These subtraction flash cards from School Zone Publishing are great a way to teach your child and keep them interested in math. Flash cards are great to use with a partner or independently. This deck includes 53 doubled sided cards with 106 subtraction problems. Each card is made of thick cardstock and has rounded edges for easy shuffling. The numbers are bold and colorful, and each side has one subtraction problem and the solution is on the opposite side. Also included are two parent cards that have suggestions for learning activities, and one solution reference card. Help your child learn and improve their subtraction skills! Ages 6 and up.