Since you're rounding to the hundreds place, we see if the tens place is greater than or equal to 5. Because 1 is not, 313 to the nearest hundred is 300.
Zero.
300
300
115
400
513900
It is 5300 rounded to the nearest hundred
5500
412 rounded to the nearest hundred is 400.
0
313 rounded to nearest tenths is 313.0
Rounded to the nearest hundred it is: 32,800
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
670 rounded to the nearest hundred is 700. 670 rounded to the nearest hundred is 1000.
5800
0
657 rounded to the nearest ten is 660. 657 rounded to the nearest hundred is 700.
313
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
300
0