Round numbers appropriately when obtaining estimates to numerical calculations

1. About Half: 62 585 4112 38 120 6258
2. About Half: 89 590 926 17 680 1834
3. About Half: 67 899 77 020 7020 8199
4. About Half: 59 730 53 030 5020 5902
5. About Half: 42 289 48 928 409 4120
6. About Half: 34 008 21 119 1987 3369
7. About Half: 4200.07. 350.9, 80.2, 6004.5
8. About Half: 8002.6, 30 204.6, 206 100.5, 5100.9
9. About Half: 616.2, 12 101.3, 24 336.9, 48 244.6
10. About Half: 20 265.7, 22 369.5, 24 287.6, 28 369.7
11. About Half: 120 369 10 493 258.69 1021.36
12. About Half: 5 125 321 10 205.68 8 200 458 60 501.36
13. About Half: 6 250 369 50 125.59 1 002 369 100 125.99
14. About Half: 12 608.9 15 093.89 4102.4 20 201.369
15. About Half: 2 200 420 500 287.36 220 420.36 50 287.36
16. About Half: 5 750 500 5 112 098 771 597 1 190 785
17. About Half: 3 890 476 77 890.98 812 496.87 3 098 847
18. About Half: 487 990 990 871109 893 412 345.92
19. About Half: 2 258 147 1258.36 202 250 820 258
20. About Half: 2 268 601 18 369 281 258 1833.33
21. About Half: 209.42 29.42 94.24 290.81
22. About Half: 601.8 900.7 505.6 208.5
23. About to divide 2423/40
24. About to divide 3198/80
25. About to divide 8068/90
26. About to divide: Click the best estimate of the answer
27. About to divide 4856/80
28. About to divide: click the best estimate
29. About to divide: click the best estimate
30. About to divide: click the best estimate
31. About to divide: click the best estimate
32. About to divide: click the best estimate
33. About to divide: click the best estimate
34. Art division: Money division
35. About to divide: Click the best estimate
36. About to divide: Click the best estimate
37. About to divide: Click the best estimate
38. About to divide: Click the best estimate
39. About to divide: Click the best estimate
40. About to divide: Estimate the answer for a division
41. About to divide: Estimate the answer for a division
42. About to divide: Estimate the answer for a division
43. About to divide: Estimate the answer for a division
44. About to divide: Estimate the answer for a division
45. About to divide: Estimate the answer for a division
46. About to divide: Estimate the answer for a division
47. About to divide: Estimate the answer for a division
48. About to divide: Estimate the answer for a division
49. About to divide: Estimate the answer for a division
50. About to divide: Click the best estimate
51. About to divide: Click the best estimate
52. About to divide: Click the best estimate
53. About to divide: Click the best estimate
54. About to divide: Click the best estimate
55. About to divide: click the best estimate
56. About to divide: click the best estimate
57. About to divide: click the best estimate
58. About Half: 1979.6 6005.1
59. About Half: 4015.9 1998.1
60. About Half: 3002.5 8978.5
61. About Half: 19 837.91, 70 011.09
62. About Half: 30 198.11, 89 997.23
63. About Half: 59 763.25, 40 289.37