206,250 rounded up to the nearest 100 is 206,300
* * * * *
That is, if you wish to introduce a systematic bias to rounding.
If you blindly and ignorantly abide by the following the rule:
Round down if the next digit is 1,2,3 or 4
Round up if the next digit is 5,6,7,8 or 9
the result is that you will round down less often than you round up. That introduces a systematic rounding bias.
To avoid this, it is recommended rule is
Round down if the next digit is 1,2,3 or 4
Round up if the next digit is 6,7,8 or 9
If the next digit is 5, round to an even digit.
Therefore, 206250 is 206,200.
That is 4800
4198 to the nearest 100 = 4200
100
100
100
100
853 rounded to the nearest 100: 900. 10853 rounded to the nearest 100: 10900.
599 to the nearest 100 is 600.
6,287 to the nearest 100 is 6,300.
204 to the nearest 100 is 200
187 to the nearest 100 = 200
2500 is already at the nearest 100.