When rounding a number to the nearest hundred, you look at the digit in the tens place. In this case, the tens place digit in 2050 is 0. Since 0 is less than 5, you would round down to the nearest hundred. Therefore, 2050 rounded to the nearest hundred is 2000.
2000
2050
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.
97 rounded to the nearest hundred is 100. 97 rounded to the nearest ten is 100
100
100
100
9000