5, 4, 9
5 + 4 = 9
4 + 5 = 9
9 - 4 = 5
9 - 5 = 4
4, 3, 7
4 + 3 = 7
3 + 4 = 7
7 - 3 = 4
7 - 4 = 3
NOTE:
Review fact families with the student. Make a few sets of numbers for the
student two write the four equations for. Have the student practice writing
the fact families both vertically and horizontally.