\[\boxed{\mathbf{Проверочная\ работа\ №2.\ Проценты}}\]
\[\boxed{\text{1.}}\]
\[0,3 = 30\%.\ \ \ \]
\[\boxed{\text{2.}}\]
\[6,8 = 680\%.\ \ \ \]
\[\boxed{\text{3.}}\]
\[0,002 = 0,2\%.\ \ \ \]
\[\boxed{\text{4.}}\]
\[40\% = 0,4.\ \ \ \]
\[\boxed{\text{5.}}\]
\[0,7\% = 0,007.\ \ \ \]
\[\boxed{\text{6.}}\]
\[Нет.\]
\[20\%\ от\ 40\ м\ равны\ 8\ м:\]
\[40\ :100 \cdot 20 = 8\ м\]
\[\boxed{\text{7.}}\]
\[Да.\]
\[25\% = 0,25 = \frac{1}{4}\text{.\ \ \ }\]
\[\boxed{\text{8.}}\]
\(Да.\)