\[\boxed{\mathbf{981}\mathbf{.}\mathbf{\ }}\]
\[1)\ \frac{1^{\backslash 10}}{2} = \frac{10}{20};\ \ \ \ \ \ \frac{3^{\backslash 5}}{4} = \frac{15}{20};\ \ \ \]
\[\text{\ \ \ }\frac{4^{\backslash 4}}{5} = \frac{16}{20};\ \ \ \ \ \frac{9^{\backslash 2}}{10} = \frac{18}{20}\text{\ \ }\]
\[2)\ \frac{3^{\backslash 9}}{4} = \frac{27}{36};\ \ \ \ \ \frac{1^{\backslash 6}}{6} = \frac{6}{36};\ \ \]
\[\ \frac{7^{\backslash 2}}{18} = \frac{14}{36};\ \ \ \ \ \frac{8^{\backslash 4}}{9} = \frac{32}{36}\ \]
\[3)\ \frac{1^{\backslash 32}}{2} = \frac{32}{64};\ \ \ \ \ \frac{2^{\backslash 16}}{4} = \frac{32}{64};\]
\[\text{\ \ \ \ }\frac{3^{\backslash 8}}{8} = \frac{24}{64};\ \ \ \ \frac{5^{\backslash 2}}{32} = \frac{10}{64}\]
\[4)\ \frac{1^{\backslash 20}}{5} = \frac{20}{100};\ \ \ \frac{1^{\backslash 25}}{4} = \frac{25}{100};\ \ \]
\[\ \frac{7^{\backslash 4}}{25} = \frac{28}{100};\ \ \ \ \ \frac{63^{\backslash 2}}{50} = \frac{126}{100}\]