Subtraction with missing numbers

Find the difference of the numbers below. Use regrouping where necessary.

1) Solve

332

-58

2) Solve

205

-92

3) Solve

768

-481

4) Solve

306

-139

5) Solve

259

-185

6) Solve

814

-165

7) Solve

211

-43

8) Solve

850

-259

9) Solve

189

-116

10) Solve

665

-543

11) Solve

246

-171

12) Solve

729

-336

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