\[\boxed{\mathbf{Страница}\mathbf{\ 5}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\boxed{\mathbf{10}\mathbf{.}\mathbf{\ }}\]
\[\boxed{\mathbf{11}\mathbf{.}\mathbf{\ }}\]
\[6 \cdot 7 = 42\]
\[8 \cdot 9 = 72\]
\[7 \cdot 8 = 56\]
\[3 \cdot 5 = 15\]
\[32\ :8 = 4\]
\[48\ :6 = 8\]
\[6 \cdot 5 = 30\]
\[4 \cdot 4 = 16\]
\[8 \cdot 2 = 16\]
\[9 \cdot 4 = 36\]
\[27\ :3 = 9\]
\[72\ :9 = 8\]
\[\boxed{\mathbf{12}\mathbf{.}}\]
\[40 + 4 = 44\]
\[63 - 3 = 60\]
\[40 + 15 = 55\]
\[90 + 10 = 100\]
\[80 - 50 = 30\]
\[30 + 30 = 60\]
\[25 - 20 = 5\]
\[38 - 10 = 28\]
\[\boxed{\mathbf{13}\mathbf{.}\mathbf{\ }}\]
\[\boxed{\mathbf{14}\mathbf{.}}\]
\[1)\ треугольник\]
\[2)\ диагональ\]
\[3)\ радиус\]
\[4)\ квадрат\]
\[5)\ квадрат\ и\ прямоугольник\]