Answers for 3 through 11 pls all

(I'll edit this for the rest I just wanted to post it)
3. 223, 22.3, 2.23, 0.223
4. 61, 6.1, 0.61, 0.061
5. 57.4, 574, 5740
Estmated:
6. 31.9 = 32 (Rounded to the nearest one)
32 ÷ 4 = 8
7. 6.1 = 6 (Rounded to the nearest one)
6 ÷ 8 = 0.75
8. 492.6 = 500 (Rounded to the nearest hundred)
48 = 50 (Rounded to the nearest one)
500 ÷ 50 = 10
Divide:
9. 1.13895
10. 0.80645
11. 0.29412
Please Mark Brainliest? thx