Write the answers to the subtraction questions below (the first one is done for you).
8 - 3 = 5
7 - 2 = 5
6 - 4 = 2
7 - 7 = 0
5 - 4 = 1
5 - 2 = 3
8 - 4 = 4
8 - 7 = 1
4 - 3 = 1
6 - 5 = 1
7 - 3 = 4
6 - 1 = 5
6 - 3 = 3
9 - 1 = 8
7 - 5 = 2
3 - 2 = 1
6 - 6 = 0
8 - 2 = 6
9 - 7 = 2
4 - 1 = 3
9 - 5 = 4
5 - 3 = 2
9 - 3 = 6