9 - 2 = ___ 10 - 9 = ___ 8 - 0 = ___
14 - 6 = ___ 6 - 5 = ___ 18 - 9 = ___
5 - 2 = ___ 10 - 8 = ___ 16 - 8 = ___
12 - 3 = ___ 9 - 2 = ___ 16 - 8 = ___
4 - 3 = ___ 5 - 5 = ___ 4 - 3 = ___
17 - 9 = ___ 12 - 3 = ___ 9 - 1 = ___
3 - 1 = ___ 8 - 0 = ___ 4 - 1 = ___
9 - 0 = ___ 9 - 9 = ___ 8 - 3 = ___
11 - 4 = ___ 14 - 5 = ___ 9 - 8 = ___
12 - 8 = ___ 0 - 0 = ___ 10 - 4 = ___