\[\boxed{\mathbf{3.}\mathbf{70}}\]
Пояснение.
Решение.
\[\textbf{а)}\ 0\ :6 = 0\]
\[0 \cdot 6 = 0\]
\[\textbf{б)}\ 13\ :1 = 13\]
\[13 \cdot 1 = 13\]
\[\textbf{в)}\ 101\ :101 = 1\]
\[1 \cdot 101 = 101\]
\[\textbf{г)}\ 95\ :19 = 5\]
\[5 \cdot 19 = 95\]
\[\textbf{д)}\ 800\ :16 = 50\]
\[16 \cdot 50 = 800\]