§ Задание 8
\[\boxed{\mathbf{1.}\mathbf{8}}\]

\[\textbf{г)}\ \frac{1}{4} = 1\ :4 = 0,25\]

\[\textbf{д)}\ \frac{19}{10} = 19\ :10 = 1,9\]
\[\boxed{\mathbf{1.}\mathbf{8}}\]

\[\textbf{г)}\ \frac{1}{4} = 1\ :4 = 0,25\]

\[\textbf{д)}\ \frac{19}{10} = 19\ :10 = 1,9\]