Решебник по математике 6 класс Ерина Никольский рабочая тетрадь Часть 1, 2 Часть 1 | Страница 35

\[\mathbf{Страница\ 35.}\]

\[\boxed{\mathbf{3.}}\]

\[\textbf{а)}\ ( + 2) + ( + 5) = + 7\]

\[\textbf{б)}\ ( + 6) + ( + 1) = + 7\]

\[\textbf{в)}\ ( + 1) + ( + 6) = + 7\]

\[\textbf{г)}\ ( + 3) + ( + 3) = + 6\]

\[\boxed{\mathbf{4.}}\]

\[\textbf{а)}\ ( - 2) + ( - 3) = - 5\]

\[\textbf{б)}\ ( - 6) + ( - 2) = - 8\]

\[\textbf{в)}\ ( - 1) + ( - 4) = - 5\]

\[\textbf{г)}\ ( - 5) + ( - 5) = - 10\]

\[\boxed{\mathbf{5.}}\]

\[\textbf{а)}\ ( + 3) + ( - 4) = - 1\]

\[\textbf{б)}\ ( + 2) + ( - 1) = + 1\]

\[\textbf{в)}\ ( + 4) + ( - 6) = - 2\]

\[\textbf{г)}\ ( - 5) + ( + 2) = - 3\]

\[\textbf{д)}\ ( - 3) + ( + 6) = + 3\]

\[\textbf{е)}\ ( - 2) + ( + 1) = - 1\]

\[\textbf{ж)}\ ( - 1) + ( + 6) = + 5\]

\[\textbf{з)}\ ( + 5) + ( - 3) = + 2\]

\[\boxed{\mathbf{6.}}\]

\[\textbf{а)}\ ( + 2) + ( - 2) = 0\]

\[\textbf{б)}\ ( - 6) + ( + 6) = 0\]

\[\textbf{в)}\ ( + 3) + ( - 5) = - 2\]

\[\textbf{г)}\ ( - 5) + ( - 6) = - 11\]

\[\textbf{д)}\ ( - 2) + ( - 3) = - 5\]

\[\textbf{е)}\ ( - 1) + ( + 5) = + 4\]

\[\textbf{ж)}\ ( + 2) + ( - 5) = - 3\]

\[\textbf{з)}\ ( - 4) + ( - 2) = - 6\]

\[\boxed{\mathbf{7.}}\]

\[\textbf{а)}\ положительными\ и\ \]

\[отрицательными.\]

\[\textbf{б)}\ увеличение.\]

\[\textbf{в)}\ уменьшение.\]