\[\boxed{\mathbf{1.}}\]
\[\boxed{\mathbf{2.}}\]
\[1)\ \frac{1}{16}\]
\[2)\ \frac{8}{8}\]
\[3)\ \frac{2}{5}\]
\[4)\ \frac{130}{1}\]
\[\boxed{\mathbf{3.}}\]
\[1)\ \frac{1}{10}\ \ дм = 1\ см\]
\[2)\ \frac{1}{10}\ м = 1\ дм\]
\[3)\ \frac{1}{100}\ м = 1\ см\]
\[4)\ \frac{1}{60}\ ч = 1\ мин\]
\[5)\ \frac{3}{10}\ см = 3\ мм\]
\[6)\ \frac{7}{100}\ м = 7\ см\]
\[\boxed{\mathbf{4.}}\]
\[1 = \frac{15}{15} = \frac{7}{7} = \frac{90}{90} = \frac{61}{61}.\]