7 - 6 = ___ 11 - 3 = ___ 8 - 4 = ___
13 - 9 = ___ 17 - 8 = ___ 3 - 2 = ___
5 - 4 = ___ 3 - 1 = ___ 12 - 4 = ___
3 - 2 = ___ 10 - 1 = ___ 15 - 6 = ___
5 - 0 = ___ 6 - 1 = ___ 9 - 4 = ___
3 - 1 = ___ 7 - 0 = ___ 12 - 6 = ___
8 - 4 = ___ 6 - 3 = ___ 7 - 7 = ___
8 - 1 = ___ 8 - 0 = ___ 2 - 2 = ___
8 - 4 = ___ 17 - 9 = ___ 9 - 3 = ___
12 - 8 = ___ 13 - 5 = ___ 7 - 3 = ___