\[Страница\ 17\]
\[\boxed{\mathbf{38.}}\]
\[13 - 6 + 9 = 16\]
\[3 + 9 - 4 = 8\]
\[14 - 9 + 8 = 13\]
\[15 - 7 + 10 = 18\]
\[11 - 2 - 7 = 2\]
\[12 - 5 + 8 = 15\]
\[\boxed{\mathbf{39.}}\]
\[1\ м = 10\ дм > 9\ дм\]
\[2\ м > 100\ см = 1\ м\]
\[1\ м = 10\ дм < 11\ дм\]
\[4\ дм = 40\ см\]
\[6\ см = 60\ мм < 70\ мм\]
\[6\ дм\ 5\ см = 65\ см > 56\ см\]
\[\boxed{\mathbf{40.}}\]
\[3 + 8 = 11\]
\[7 + 6 = 13\]
\[9 + 7 = 16\]
\[5 + 3 = 8\]
\[50 + 30 = 80\]
\[70 + 20 = 90\]
\[8 - 2 = 6\]
\[80 - 20 = 60\]
\[90 - 40 = 50\]
\[\boxed{\mathbf{41.}}\]
\[3)\ Сколько\ всего\ грибов\ \]
\[нашли\ Люда\ и\ Артем?\]
\[10 + (10 - 3) = 10 + 7 =\]
\[= 17\ грибов.\]
\[Ответ:17\ грибов.\]