2.NBT.8 — Mentally Subtract 10 or 100

Subtract 10 or 100 from each number in your head and write the answer.

1. 1.200 - 10 =
2. 2.350 - 100 =
3. 3.475 - 10 =
4. 4.630 - 100 =
5. 5.812 - 10 =
6. 6.740 - 100 =
7. 7.563 - 10 =
8. 8.900 - 100 =
9. 9.128 - 10 =
10. 10.500 - 100 =
11. 11.687 - 10 =
12. 12.420 - 100 =
13. 13.315 - 10 =
14. 14.750 - 100 =
15. 15.241 - 10 =
16. 16.860 - 100 =
17. 17.193 - 10 =
18. 18.507 - 100 =
19. 19.724 - 10 =
20. 20.600 - 100 =