\[\mathbf{Страница\ 4.}\]
\[\boxed{\mathbf{1.}}\]
\[\textbf{а)}\ отношением,\ \]
\[членами\ отношения;\]
\[\textbf{б)}\ умножить,\ \]
\[разделить,\ \]
\[нулю;\]
\[\textbf{в)}\ отношением,\ \]
\[членами\ отношения;\]
\[\textbf{г)}\ число;\]
\[\textbf{д)}\ новая\ величина.\]
\[\boxed{\mathbf{2.}}\]
\[\textbf{а)}\ 8\ :2;\]
\[\textbf{б)}\ 16\ :17;\]
\[\textbf{в)}\ \frac{1}{7}\ :\frac{1}{2};\]
\[\textbf{г)}\ 3\ :\frac{2}{5};\]
\[\textbf{д)}\ \frac{8}{9}\ :\frac{1}{10};\]
\[\textbf{е)}\ 1\ :5.\]
\[\boxed{\mathbf{3.}}\]
\[\textbf{а)}\ \frac{1414}{14} = 101;\]
\[\textbf{б)}\ 3\frac{3}{4}\ :5\frac{1}{3} = \frac{15}{4}\ :\frac{16}{3} =\]
\[= \frac{15 \cdot 3}{4 \cdot 16} = \frac{45}{64};\]
\[\textbf{в)}\ \frac{8}{15}\ :\frac{4}{15} = \frac{8 \cdot 15}{15 \cdot 4} = 2;\]
\[\textbf{г)}\ 5\frac{2}{5}\ :2\frac{1}{2} = \frac{27 \cdot 2}{5 \cdot 5} = \frac{54}{25} = 2,16.\]
\[\boxed{\mathbf{4.}}\]
\[\textbf{а)}\ 119\ к\ 34;\]
\[\textbf{б)}\ 8\ к\ 15;\]
\[\textbf{в)}\ 4\ к\ 3;\]
\[\textbf{г)}\ 521\ к\ 40.\]