To begin this activity, collect several weeks worth of grocery fliers. You could get these from your newspaper each week, or go by the newspaper office for additional copies if you are in a hurry. Students could also bring these from home.
Explain the activity and do the included examples I have for you with the whole class. You may want to go review the different place value places with students before beginning this activity.
Let students choose 1 grocery sale paper to do their “grocery shopping” in either a group or individually.