209 hundredths = 209/100 = 2.09
209/100 as a decimal is 2.09
2.09 written as a percentage is 209%
187/209 = 17/19
CCIX
2.09
209.03
209 is an integer: it is neither a fraction nor a mixed number.
209.03
209.03
0.209 is the same as 209/1000
There is no such thing as "decimalsths"