Страница 59, ГДЗ по математике за 4 класс к самостоятельным и контрольным работам Лопатковой
Умножение и деление на числа, оканчивающиеся нулями. Контрольная работа. Вариант 2
\[\begin{aligned} 276\,800 : 800 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{346}}}}} & \qquad 6\,590 \cdot 700 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{4\,613\,000}}}}} \\ 75\,270 : 30 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{2\,509}}}}} & \qquad 9\,070 \cdot 50 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{453\,500}}}}} \\ 856\,320 : 80 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{10\,704}}}}} & \qquad 8\,270 \cdot 60 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{496\,200}}}}} \end{aligned}\] \[\begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 2768}}}}}{2768}00 & \underline{\,800\,} \\ \underline{2400}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{3}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{4}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{6}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}3680\phantom{0} & \\ \phantom{0}\underline{3200}\phantom{0} & \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}4800 & \\ \phantom{00}\underline{4800} & \\ \phantom{00000}0 & \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}6590\phantom{00} \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}700\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{3}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \qquad \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\frown}}}{75}270 & \underline{\,30\phantom{00}\,} \\ \underline{60}\phantom{000} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{2}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{5}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{0}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{9}\kern-0.075em}} \\ \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}152\phantom{00} & \\ \underline{150}\phantom{00} & \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}270 & \\ \phantom{00}\underline{270} & \\ \phantom{0000}0 & \end{array}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}9070\phantom{0} \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}50\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{3}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \qquad \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\frown}}}{85}6320 & \underline{\,80\phantom{000}\,} \\ \underline{80}\phantom{0000} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{1}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{0}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{7}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{0}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{4}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}563\phantom{00} & \\ \phantom{0}\underline{560}\phantom{00} & \\ \phantom{000}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}320 & \\ \phantom{000}\underline{320} & \\ \phantom{00000}0 & \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}8270\phantom{0} \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}60\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array}\]
\[\begin{aligned} 563\,430 \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} 70 \overset{\textcolor{#1a7f37}{3}}{+} 9\,204 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} 40 &= \boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\mathbf{376\,209}}}}} \end{aligned}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 563}}}}}{563}430 & \underline{\,70\phantom{00}\,} \\ \underline{560}\phantom{000} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{8}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{0}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{4}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{9}\kern-0.075em}} \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}343\phantom{0} & \\ \phantom{00}\underline{280}\phantom{0} & \\ \phantom{000}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}630 & \\ \phantom{000}\underline{630} & \\ \phantom{00000}0 & \end{array} \end{array} \qquad \begin{array}{l} \textcolor{#1a7f37}{\mathbf{2)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}9204\phantom{0} \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}40 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{0}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \end{array} \qquad \begin{array}{l} \textcolor{#1a7f37}{\mathbf{3)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}3\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{6}}8\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{1}}60 \\ \smash{\raisebox{0.62em}{$+$}} & \vphantom{\overset{\bullet}{0}}8049 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{7}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{9}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \end{array}\]
\(1)\ 70 \cdot 4 = \textcolor{#e03131}{\mathbf{280}}\text{ (км)}\)
\(2)\ 600 - 280 = \textcolor{#e03131}{\mathbf{320}}\text{ (км)}\)
\(3)\ 320 : 4 = \textcolor{#e03131}{\mathbf{80}}\text{ (км/ч)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{80}}\) км/ч.