1000
Any number in the range A950 to B049 where B = A+1, that is, 950 to 1049 (rounded to 1000) 1950 to 1149 (rounded to 2000) ... 5950 to 6049 (rounded to 6000) etc.
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