853 rounded to the nearest 100: 900. 10853 rounded to the nearest 100: 10900.
600
100
100
0
555 rounded to the nearest 100 is 600.
20
97 rounded to the nearest hundred is 100. 97 rounded to the nearest ten is 100
100
100
25. the 12 is closest to 0 not 100 so it stays at 25
100