The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
853 rounded to the nearest 100: 900. 10853 rounded to the nearest 100: 10900.
100
100
0
555 rounded to the nearest 100 is 600.
289.0
97 rounded to the nearest hundred is 100. 97 rounded to the nearest ten is 100
100
100
100
0