Help children master the basics of subtraction with Ready to Learn: K–2 Subtraction Flash Cards. Half of the cards in this 48-card set show equations vertically, and the other half horizontally, so as to familiarize beginning math students ages 5 to 8 with the two most common ways they’ll see the problems in school. Whether students quiz themselves or work with a partner, they’ll find that these math flash cards reinforce the skills needed to succeed in kindergarten through second grade math. Shows equations in two formats: vertically and horizontally. Each card features a subtraction problem with its solution on the other side. Portable for on-the-go learning. Includes 48 two-color cards. Meets Common Core State Standards