It is 1300 because anything from 1250-1300 would be rounded up. Anything fron 1200-1249 would have been rounded down.
1300
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
0
0
678 is rounded nearest hundred is 700
10900
500
3300