\[\boxed{\mathbf{Вариант\ 1.}}\]
\[\boxed{\mathbf{1.}}\]
\[1)\ 8 \cdot 0 = 0\]
\[1 \cdot 10 = 10\]
\[0\ :9 = 0\]
\[9 \cdot 1 = 9\]
\[0 \cdot 20 = 20\]
\[10 \cdot 0 = 0\]
\[13\ :13 = 1\]
\[40 + 0 = 40\]
\[30 - 0 = 30\]
\[2)\ (92 - 15) \cdot 0 = 0\]
\[67 \cdot 1 + 9 = 67 + 9 = 76\]
\[\boxed{\mathbf{2.}}\]
\[1 \cdot 18 + 18 > 1 \cdot 18 - 18\]
\[0 \cdot 54 < 54 + 0\]
\[8 \cdot 9 < 8 \cdot 9 + 9\]
\[6 \cdot 7 = 6 \cdot 8 - 6\]
\[\boxed{\mathbf{3.}}\]
\[6 \cdot 8 + 4 \cdot 3 = 48 + 12 =\]
\[= 60\ (кг) - яблок\ и\ груш\ \]
\[собрал\ фермер.\]
\[Ответ:60\ кг.\]
\[\boxed{\mathbf{4.}}\]
\[0\ :a = a - a\]
\[0 \cdot c < c \cdot 1\]