Contains leveled activities that provide 3 digit addition and subtraction practice. Activities are designed similar to other "read the room" centers. Activities are differentiated for the following levels: low, medium, and upper. Each level has its own picture symbol to help students keep up with their appropriate level of math problems. Activities support meeting the following 2nd grade Common Core Georgia Performance Standard (CCGPS): MCC.2.NBT.7. Answer Key and student recording sheet included.