\[Страница\ 4\]
\[\boxed{\mathbf{5.}}\]
\[10 =\]
\[9 + 1\]
\[3 + 7\]
\[2 + 8\]
\[5 + 5\]
\[4 + 6\]
\[11 =\]
\[6 + 5\]
\[7 + 4\]
\[8 + 3\]
\[9 + 2\]
\[10 + 1\]
\[\boxed{\mathbf{6.}}\]
\[6 + 5 = 11 > 10\]
\[9 + 1 = 10 < 11\]
\[4 + 9 = 13\]
\[10 - 2 = 8 < 9\]
\[13 - 6 = 7\]
\[16 - 9 = 7 > 6\]
\[5 = 9 - 4\]
\[8 < 15 - 6 = 9\]
\[4 = 11 - 7\]
\[\boxed{\mathbf{7.}}\]
\[1)\ 10;19;15;17;20.\]
\[2)\ 19;16;14;12;9.\]