Subtract five-digit numbers with regrouping

Every one needs regrouping.

1. 16,802 − 14,966 =
2. 12,479 − 10,553 =
3. 20,606 − 17,567 =
4. 17,690 − 10,997 =
5. 28,132 − 13,799 =
6. 27,850 − 13,806 =
7. 30,025 − 26,362 =
8. 30,897 − 30,269 =
9. 36,771 − 20,876 =
10. 54,544 − 52,749 =
11. 35,524 − 12,056 =
12. 54,426 − 53,898 =
13. 63,754 − 45,990 =
14. 43,230 − 11,856 =
15. 68,680 − 59,249 =
16. 46,702 − 39,400 =
17. 98,090 − 85,720 =
18. 82,917 − 78,313 =
19. 76,595 − 18,298 =
20. 69,411 − 54,753 =