Addition Math Test

1: 5 + 9 = 11: 3 + 3 =
2: 2 + 1 = 12: 4 - 4 =
3: 7 + 4 = 13: 1 + 1 =
4: 10 - 9 = 14: 7 + 6 =
5: 10 + 5 = 15: 8 - 1 =
6: 7 + 5 = 16: 9 + 6 =
7: 9 - 3 = 17: 3 - 2 =
8: 10 - 0 = 18: 4 - 2 =
9: 5 - 2 = 19: 1 + 8 =
10: 3 - 3 = 20: 9 - 9 =