You round it down to 100, as the 2 for tens must be rounded down.
To the nearest ten, 120 To the nearest hundred, 100
121 rounded to the nearest 10 is 120 .
121
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
5800
0
657 rounded to the nearest ten is 660. 657 rounded to the nearest hundred is 700.
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
0
10000