Ответ:

\((0{,}3)^2=0{,}09\), \((0{,}3)^3=0{,}027\), а \(\frac1{20}=0{,}05\).

Ответ: \(-\frac{11}{17}; -\frac{8}{17}; -\frac{3}{17}; -\frac{1}{17}; 0; (0{,}3)^3; \frac1{20}; (0{,}3)^2; 0{,}3\).