Subtraction practice

Solve each problem. Use the scratch space if you need it.

1. 4 - 2=____
2. 76 - 65=____
3. 58 - 33=____
4. 73 - 69=____
5. 176 - 148=____
6. 181 - 179=____
7. 28 - 15=____
8. 144 - 42=____