4500 can be rounded only to 4500 to the nearest 100.
4500
4500
4540
4500
4500 can be rounded only to 4500 to the nearest 100.
4500, rounded to the nearest 200 would be 4600.
It is then: 4500
4500
4500
4500
2300.00...1 to the nearest 4600
5000
4500
4500
4500
4540