Subtract five- and six-digit numbers with regrouping

Every one needs regrouping.

1. 25,202 − 22,796 =
2. 108,038 − 57,402 =
3. 70,583 − 29,642 =
4. 84,402 − 14,264 =
5. 175,969 − 55,571 =
6. 189,044 − 129,524 =
7. 81,745 − 14,283 =
8. 171,722 − 89,559 =
9. 432,377 − 336,938 =
10. 112,733 − 20,475 =
11. 68,050 − 14,882 =
12. 176,143 − 126,451 =
13. 223,802 − 104,921 =
14. 353,295 − 190,311 =
15. 718,048 − 651,741 =
16. 379,321 − 190,370 =
17. 279,954 − 270,828 =
18. 676,238 − 127,229 =
19. 820,448 − 358,255 =
20. 914,815 − 256,293 =