Taking away 0 or 1

Subtract the numbers to find the difference.

1) Solve
1-0=
2) Solve
19-0=
3) Solve
11-0=
4) Solve
3-0=
5) Solve
17-0=
6) Solve
8-1=
7) Solve
14-1=
8) Solve
12-0=
9) Solve
10-1=
10) Solve
19-0=
11) Solve
3-1=
12) Solve
11-1=
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