Страница 71, ГДЗ по математике за 4 класс к самостоятельным и контрольным работам Лопатковой
Умножение и деление на двузначное и трёхзначное число. Контрольная работа. Вариант 2
\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}764 \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}47 \\ \hline & 5348 \\ \smash{\raisebox{0.62em}{$+$}} & 3056\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{8}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \qquad \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 184}}}}}{184}68 & \underline{\,54\phantom{0}\,} \\ \underline{162}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{3}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{4}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{2}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}226\phantom{0} & \\ \phantom{0}\underline{216}\phantom{0} & \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}108 & \\ \phantom{00}\underline{108} & \\ \phantom{0000}0 & \end{array}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}582 \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}364 \\ \hline & 2328 \\ \smash{\raisebox{0.62em}{$+$}} & 3492\phantom{0} \\ & 1746\phantom{00} \\ \hline & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{4}\kern-0.075em\mathbf{8}\kern-0.075em} \\ & \vphantom{\underline{0}} \end{array} \qquad \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 270}}}}}{270}27 & \underline{\,91\phantom{0}\,} \\ \underline{182}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{2}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{9}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{7}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}882\phantom{0} & \\ \phantom{0}\underline{819}\phantom{0} & \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}637 & \\ \phantom{00}\underline{637} & \\ \phantom{0000}0 & \end{array}\]
\[\begin{aligned} \overset{\textcolor{#808080}{\scriptstyle 2\,642\text{ см}}}{26\text{ м }42\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 2\,642\text{ см} & \qquad \overset{\textcolor{#808080}{\scriptstyle 531\text{ мин}}}{8\text{ ч }51\text{ мин}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 851\text{ мин} \\ \overset{\textcolor{#808080}{\scriptstyle 40\,487\text{ м}}}{40\text{ км }487\text{ м}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 4\,487\text{ м} & \qquad \overset{\textcolor{#808080}{\scriptstyle 6\,903\text{ кг}}}{6\text{ т }9\text{ ц }3\text{ кг}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 693\text{ кг} \end{aligned}\]
\[\begin{aligned} x \cdot 62 &= 3\,162 & \qquad y : 254 &= 72 \\ x &= 3\,162 : 62 & \qquad y &= 72 \cdot 254 \\ x &= \textcolor{#e03131}{\mathbf{51}} & \qquad y &= \textcolor{#e03131}{\mathbf{18\,288}} \end{aligned}\] \[\begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 316}}}}}{316}2 & \underline{\,62\,} \\ \underline{310}\phantom{0} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{5}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{1}\kern-0.075em}} \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}62 & \\ \phantom{00}\underline{62} & \\ \phantom{000}0 & \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}254 \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}72 \\ \hline & 508 \\ \smash{\raisebox{0.62em}{$+$}} & 1778\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{8}\kern-0.075em} \end{array}\]
\(1)\ 1\,245 : 5 = \textcolor{#e03131}{\mathbf{249}}\text{ (кг)}\)
\(2)\ 249 \cdot 3 = \textcolor{#e03131}{\mathbf{747}}\text{ (кг)}\)
\(3)\ 249 + 747 = \textcolor{#e03131}{\mathbf{996}}\text{ (кг)}\)
\(4)\ 1\,245 - 996 = \textcolor{#e03131}{\mathbf{249}}\text{ (кг)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{249}}\) кг.
\[\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\mathpunct{\textcolor{#e03131}{\mathbf{,}}}\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\mathpunct{\textcolor{#e03131}{\mathbf{,}}}\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\mathpunct{\textcolor{#e03131}{\mathbf{,}}}\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\] \(\textcolor{#808080}{\text{Подходит и число}}\) \(\textcolor{#808080}{\text{0.}}\)