This is a set of 20 word problems that have QR codes included on the task card. There is a mix of addition and subtraction problems. I have noticed my kiddos struggling with "how many more" questions, so there are few of those included as well. My students love doing these during math centers, and it is awesome because they get immediate feedback by using the QR code. If you have any questions or concerns, please contact me before giving a bad rating. :) I hope you and your students love these as much as we do!