Subtraction Within
| 1 | 2 - 1 = ______________ |   |
| 2 | 9 - 7 = ______________ | |
| 3 | 3 - 2 = ______________ | |
| 4 | 5 - 4 = ______________ | |
| 5 | 6 - 5 = ______________ | |
| 6 | 8 - 7 = ______________ | |
| 7 | 10 - 8 = ______________ | |
| 8 | 4 - 3 = ______________ | |
| 9 | 0 - 0 = ______________ | |
| 10 | 1 - 0 = ______________ | |
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