Math Flash Cards

Flash cards that help with learning addition, subtraction, multiplication and division. There are 50 cards in each category for a total of 200 cards. Math problems are on front and back of cards bringing a total of 400 problems. All cards are in excellent condition except maybe two are bent slightly like shown picture. Box has a slight tear as also shown in picture. Cards are 4 3/4” x 3”. Box that holds all cards is 5” x 6 1/2” x 1 1/4”. Velcro closing on box