\[\boxed{\mathbf{22.}}\]
\[Слева\ направо:\]
\[2;\ \ \ 6;\ \ \ 3;\ \ \ 8.\]
\[Умножение\ числа\ 3\ и\ деление\ на\ 3\]
\[\boxed{\mathbf{1.}}\]
\[Обведите\ кружком\ числа:\]
\[3,\ 6,\ 9,\ 12,\ 15,\ 18,\ 21,\ 24,\ 27,\ 30.\]
\[3 \cdot 1 = 3\]
\[3 \cdot 2 = 6\]
\[3 \cdot 3 = 9\]
\[3 \cdot 4 = 12\]
\[3 \cdot 5 = 15\]
\[3 \cdot 6 = 18\]
\[3 \cdot 7 = 21\]
\[3 \cdot 8 = 24\]
\[3 \cdot 9 = 27\]
\[3 \cdot 10 = 30\]