Buy and save in this bundle pack that includes three different math centers all in one. Centers focus on the concepts of addition with regrouping, subtraction with regrouping and place value. Use in small groups or for students to use independently to assess where they are with the concept of addition with regrouping. There are 16 different cards in each center done both with QR codes for self checking and without QR codes. Student response sheets are made with big enough boxes for students to show all of their work. Just laminate, cut and place out to use.