0.9

0.09

0.009

9.0

$5+\frac{6}{10}+\frac{8}{100}$

$5+\frac{6}{100}+\frac{8}{10}$

$5+\frac{6}{10}+\frac{8}{1000}$

$5+\frac{6}{100}+\frac{8}{1000}$

9.09

9.177

9.377

9.5