This product is two editable Word documents where students have to add time together. You can add teacher's names from your own school and the areas of yard duty. The activity is asking students to work out if all of the teachers get an equal amount of yard duty. The extension task then asks students to give the teachers an equal amount of yard duty. Students have to add together all of the yard duty slots and then divide that by the amount of teachers.
Answer for extension activity provided. Delete it before you print for students.