\[\boxed{\text{1185.\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
\[\textbf{а)}\ 6 \cdot 12^{- 1} = 6 \cdot \frac{1}{12} = \frac{1}{2}\]
\[\textbf{б)} - 4 \cdot 8^{- 2} = - 4 \cdot \frac{1}{8^{2}} =\]
\[= - \frac{4}{64} = - \frac{1}{16}\]
\[\textbf{в)}\ 6^{- 1} - 3^{- 2} = \frac{1}{6} - \frac{1}{3^{2}} = \frac{1}{6} -\]
\[- \frac{1}{9} = \frac{3 - 2}{18} = \frac{1}{18}\]
\[\textbf{г)}\ {1,3}^{0} - {1,3}^{- 1} = 1 - \left( \frac{13}{10} \right)^{- 1} =\]
\[= 1 - \frac{10}{13} = \ \frac{13 - 10}{13} = \frac{3}{13}\]
\[\textbf{д)}\ 12 - \left( \frac{1}{6} \right)^{- 1} = 12 - 6 = 6\]
\[\textbf{е)}\ 25 + {0,1}^{- 2} = 25 + \left( \frac{1}{10} \right)^{- 2} =\]
\[= 25 + 100 = 125\]