This activity sheet asks students to roll a dice or select a playing card with numbers higher than 20 (teacher can give 2 digit dice to lower ability groups; higher ability groups might roll 3 digit dice twice to create a 6 digit number). Students then fill in their number and corresponding counting on and back questions. At the end, students are challenged to use one of the number facts they created to "be the teacher" and create an associated word problem.
Notes for teacher included, with brief ideas for the lesson, including how to differentiate. Suitable for any grade level exploring counting on and back by 1, 2, 10 & 20.