§ Задание 13
\[\boxed{\mathbf{13.}}\]
\[6 \cdot 2 = 12\]
\[12\ :6 = 2\]
\[12\ :2 = 6\]
\[6 \cdot 4 = 24\]
\[24\ :6 = 4\]
\[24\ :4 = 6\]
\[6 \cdot 5 = 30\]
\[30\ :6 = 5\]
\[30\ :5 = 6\]
\[\boxed{\mathbf{13.}}\]
\[6 \cdot 2 = 12\]
\[12\ :6 = 2\]
\[12\ :2 = 6\]
\[6 \cdot 4 = 24\]
\[24\ :6 = 4\]
\[24\ :4 = 6\]
\[6 \cdot 5 = 30\]
\[30\ :6 = 5\]
\[30\ :5 = 6\]