5 + 1 = 6 1 + 5 = 6
7 + 2 = 9 2 + 7 = 9
3 + 2 = 5 2 + 3 = 5
4 + 8 = 12 8 + 4 = 12
3 + 9 = 12 9 + 3 = 12
NOTE: Explain that turning around an addition problem doesn't change the
answer. For instance, 2 + 9 and 9 + 2 have the same sum. Present a few more
examples to the student before going on to the assignment.