\[\boxed{\mathbf{Проверьте\ себя.\ Страница\ 45}}\]
\[\boxed{\mathbf{Проверочная\ работа.\ Сложение\ чисел\ с\ разными\ знаками}}\]
\[\boxed{\text{1.}}\]
\[\textbf{а)}\ + ;\]
\[5 + 5 = 10.\]
\[\textbf{б)}\ - ;\]
\[- 4 + ( - 6) = - 10.\]
\[\textbf{в)}\ - ;\]
\[- 11 + 6 = - 5.\]
\[\boxed{\text{2.}}\]
\[\textbf{а)}\ 15 - 16 = - 1\]
\[\textbf{б)} - 3,17 + 3,17 = 0\]
\[\textbf{в)} - 1\frac{3}{14} + 2\frac{11}{21} =\]
\[= 2\frac{22}{42} - 1\frac{9}{42} = 1\frac{13}{42}\]
\[\textbf{г)} - 379 + 948 =\]
\[= - (948 - 379) = - 569\]
\[\textbf{д)} - 0,08 + 13 = 13 - 0,08 =\]
\[= 12,092\]
\[\textbf{е)}\ 2\frac{1}{15} - 3\frac{9}{25} =\]
\[= - \left( 3\frac{27}{75} - 2\frac{5}{75} \right) = - 1\frac{22}{75}\]
\[\boxed{\text{3.}}\]
\[x - 3\frac{2}{7} = - 11\frac{13}{14}\]
\[x = - 11\frac{13}{14} + 3\frac{2}{7}\]
\[x = - \left( 11\frac{13}{14} - 3\frac{4}{14} \right)\]
\[x = - 8\frac{9}{14}.\]
\[\boxed{\text{4.}}\]
\[- 44 + c + 752 =\]
\[= c + (752 - 44) = c + 708.\]
\[\boxed{\text{5.}}\]
\[a = - 9,5;\ \ b = 1,3;\ \ c = - 2,7:\]
\[a + b + c = - 9,5 + 1,3 - 2,7 =\]
\[= - 12,2 + 1,3 = - 10,9.\]
Глава 32. Действие вычитания