Borrow over three zeros

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

1) Solve

7000

-485

2) Solve

9000

-1742

3) Solve

4000

-1771

4) Solve

2000

-659

5) Solve

5000

-4700

6) Solve

7000

-4359

7) Solve

7000

-6711

8) Solve

8000

-558

9) Solve

9000

-413

10) Solve

8000

-3991

11) Solve

6000

-2726

12) Solve

3000

-2033

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