100
100. 18 is closer to 100 than it is to 200.
97 will have the same result when rounded to the nearest ten or hundred.
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
0
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
0
10000
0
678 is rounded nearest hundred is 700
0
10900
500