§ Задание 5
\[\boxed{\mathbf{5}\mathbf{.}}\]
\[1)\ 3 \cdot 7 = 21\]

\[2)\ 3 \cdot 8 = 24\]

\[3)\ 3 \cdot 9 = 27\]

\[4)\ 3 \cdot 10 = 30\]

\[\boxed{\mathbf{5}\mathbf{.}}\]
\[1)\ 3 \cdot 7 = 21\]

\[2)\ 3 \cdot 8 = 24\]

\[3)\ 3 \cdot 9 = 27\]

\[4)\ 3 \cdot 10 = 30\]
