These flash cards can help your child learn numbers, numerical order, skip counting, grouping, addition and subtraction. The Parent and Game Cards suggest activities that can help your child develop important math skills and enjoy learning. Rounded corners for fast sorting! The numbers 1-50 are on the front side of the cards! The numbers 51-100 are on the reverse side of the card! 1-box of 50 Number cards. 3 counting cards. 1 Parent Card. 1 Game Card. 1 Odd​/​Even Card. Front and Back. Instructions Included. Ages 4+.