Страница 30, ГДЗ по математике за 2 класс к проверочным работам Волковой. Серия "Школа России" к УМК Моро
Сложение и вычитание. Устные вычисления. Проверочная работа 2. Вариант 1
\[\begin{array}{|c|c|c|c|c|} \hline 42 & 34 & 70 & 85 & 93 \\ \hline \rule[-0.52em]{0pt}{1.66em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \\ \hline \end{array}\] Уменьши на 6: \[\begin{array}{|c|c|c|c|c|} \hline 59 & 70 & 68 & 47 & 36 \\ \hline \rule[-0.52em]{0pt}{1.66em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \\ \hline \end{array}\]
\(1)\ 6 + 8 = \textcolor{#e03131}{\mathbf{14}}\text{ (кв.)}\)
\(2)\ 14 - 10 = \textcolor{#e03131}{\mathbf{4}}\text{ (кв.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{4}}\) квартиры.
\(1)\ 19 - 9 = \textcolor{#e03131}{\mathbf{10}}\text{ (о.)}\)
\(2)\ 19 + 10 = \textcolor{#e03131}{\mathbf{29}}\text{ (о.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{29}}\) огурцов.
\[\begin{aligned} 60 - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} &= 17 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 20}}}{+} 3 \\ 41 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 50}}}{+} 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 18 \end{aligned}\]