\[\boxed{\mathbf{Проверочная\ работа\ №2.\ Сложение\ и\ вычитание\ обыкновенных\ дробей}}\]
\[\boxed{\mathbf{1.}}\]
\[\frac{1^{\backslash 2}}{2} + \frac{1}{4} = \frac{2}{4} + \frac{1}{4} = \frac{3}{4}\]
\[\boxed{\mathbf{2.}}\]
\[\frac{4^{\backslash 3}}{5} + \frac{1^{\backslash 5}}{3} = \frac{12}{15} + \frac{5}{15} = \frac{17}{15} =\]
\[= 1\frac{2}{15}\]
\[\boxed{\mathbf{3.}}\]
\[\frac{1^{\backslash 2}}{3} - \frac{1}{6} = \frac{2}{6} - \frac{1}{6} = \frac{1}{6}\]
\[\boxed{\mathbf{4.}}\]
\[1 - \frac{3}{11} = \frac{11}{11} - \frac{3}{11} = \frac{8}{11}\]
\[\boxed{\mathbf{5.}}\]
\[x + \frac{1}{3} = \frac{1}{2}\]
\[x = \frac{1^{\backslash 3}}{2} - \frac{1^{\backslash 2}}{3} = \frac{3}{6} - \frac{2}{6}\]
\[x = \frac{1}{6}.\]
\[\boxed{\mathbf{6.}}\]
\[\frac{1}{5} - x = \frac{1}{30}\]
\[x = \frac{1^{\backslash 6}}{5} - \frac{1}{30} = \frac{6}{30} - \frac{1}{30} = \frac{5}{30}\]
\[x = \frac{1}{6}.\]
\[\boxed{\mathbf{7.}}\]
\[60\% = 0,6 = \frac{3}{5}\]
\[\frac{2^{\backslash 5}}{3} = \frac{10}{15} > \frac{3^{\backslash 3}}{5} = \frac{9}{15}\]
\[\frac{2}{3} > 60\%.\]
\[Нет.\]
\[\boxed{\mathbf{8.}}\]
\[30\% = 0,3 = \frac{3}{10}\]
\[\frac{1}{8} + \frac{1^{\backslash 2}}{4} = \frac{1}{8} + \frac{2}{8} = \frac{3}{8}\]
\[\frac{3}{8} > \frac{3}{10} > 30\%.\]
\[\mathbf{Да.}\]
\[\boxed{\mathbf{9.}}\]
\[\mathbf{Нет,\ больше\ та\ дробь,\ у\ }\]
\[\mathbf{которой\ знаменатель\ меньше.}\]