600
600
600
580
577 to the nearest hundred = 600The next digit at the right of 5 is 7 which is more than 5, so add one to 5.If the next digit at the right of 5 is less than 5, retain 5.
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
87.3809 is already rounded to the nearest hundred thousandths. 87.3809 rounded to the nearest thousand is 87.381.
0
0
0
678 is rounded nearest hundred is 700