3000
All whole, three-digit numbers from 450 through 549 (when rounding to the nearest hundreds).
5000
There are 9 numbers that fit the description. 455,456,457,458,459,461,462,453 and 454.
0
3000
8000
1234
1000
86000
27.00527.00627.007
2300
455 to 464
455 to 464
0
27222722
which three digit numbers round to 500 when rounded to the nearest hundred , and also round to the 460 when rounded to the nearest ten