Children will master subtraction by using Ready to Learn: K&;2 Subtraction Flash Cards! The included forty-eight cards contain half the equations displayed vertically and the rest displayed horizontally to familiarize children with the two common subtraction equations they are likely to encounter. Whether quizzing themselves or using the flash cards with a friend, children can easily find the answer to each equation on the reverse of the card. These double-sided, subtraction flash cards reinforce the skills needed to prepare children for kindergarten through second grade.