Addition Math Quiz

1: 4 - 4 = 11: 1 + 9 =
2: 3 + 4 = 12: 6 - 2 =
3: 9 + 1 = 13: 8 - 8 =
4: 8 + 2 = 14: 6 - 1 =
5: 1 - 1 = 15: 9 - 2 =
6: 2 + 6 = 16: 1 + 10 =
7: 9 - 9 = 17: 3 - 3 =
8: 4 - 1 = 18: 3 + 4 =
9: 8 - 6 = 19: 4 + 2 =
10: 5 - 4 = 20: 9 - 9 =