Страница 70, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России

\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}2376 \\ \smash{\raisebox{0.62em}{$\times$}} & 84 \\ \hline & 9504 \\ \smash{\raisebox{0.62em}{$+$}} & 19008\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{4}\kern-0.075em} \end{array}\] \[244\,200 \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} 600 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} 400 = \textcolor{#e03131}{\mathbf{162\,800}}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 2442}}}}}{2442}00 & \underline{\,600\,} \\ \underline{2400}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{4}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{0}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{7}\kern-0.075em}} \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}4200 & \\ \phantom{00}\underline{4200} & \\ \phantom{00000}0 & \end{array} \end{array} \qquad \begin{array}{l} \textcolor{#1a7f37}{\mathbf{2)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}407\phantom{00} \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}400 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \end{array}\] \[5\,460 \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} 70 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} 45 = \textcolor{#e03131}{\mathbf{3\,510}}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 546}}}}}{546}0 & \underline{\,70\,} \\ \underline{490}\phantom{0} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{7}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{8}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}560 & \\ \phantom{0}\underline{560} & \\ \phantom{000}0 & \end{array} \end{array} \qquad \begin{array}{l} \textcolor{#1a7f37}{\mathbf{2)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}78 \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}45 \\ \hline & 390 \\ \smash{\raisebox{0.62em}{$+$}} & 312\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \end{array}\]

\(1)\ 12 - 3 = \textcolor{#e03131}{\mathbf{9}}\text{ (пл.)}\)
\(2)\ 36 : 9 = \textcolor{#e03131}{\mathbf{4}}\text{ (м)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{4}}\) м.

\(1)\ 40 \cdot 80 = \textcolor{#e03131}{\mathbf{3\,200}}\text{ (м}^2\text{)}\)
\(2)\ 3\,200 : 8 \cdot 3 = \textcolor{#e03131}{\mathbf{1\,200}}\text{ (м}^2\text{)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{1\,200}}\) м².

\[\begin{aligned} 70 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{\cdot}}}}\hspace{0.72em}} 70 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 100 &= 5\,000 & \qquad 600 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{:}}}}\hspace{0.72em}} 30 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{\cdot}}}}\hspace{0.72em}} 70 &= 1\,400 \end{aligned}\]

\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}4347 \\ \smash{\raisebox{0.62em}{$\times$}} & 68 \\ \hline & 34776 \\ \smash{\raisebox{0.62em}{$+$}} & 26082\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array}\] \[95\,400 \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} 900 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} 600 = \textcolor{#e03131}{\mathbf{63\,600}}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 954}}}}}{954}00 & \underline{\,900\,} \\ \underline{900}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{1}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{0}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{6}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}5400 & \\ \phantom{0}\underline{5400} & \\ \phantom{0000}0 & \end{array} \end{array} \qquad \begin{array}{l} \textcolor{#1a7f37}{\mathbf{2)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}106\phantom{00} \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}600 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{3}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \end{array}\] \[3\,440 \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} 40 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} 53 = \textcolor{#e03131}{\mathbf{4\,558}}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\overgroup{\hphantom{\textstyle 344}}}}}{344}0 & \underline{\,40\,} \\ \underline{320}\phantom{0} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{8}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{6}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}240 & \\ \phantom{0}\underline{240} & \\ \phantom{000}0 & \end{array} \end{array} \qquad \begin{array}{l} \textcolor{#1a7f37}{\mathbf{2)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}86 \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}53 \\ \hline & 258 \\ \smash{\raisebox{0.62em}{$+$}} & 430\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{8}\kern-0.075em} \end{array} \end{array}\]

\(1)\ 9 - 4 = \textcolor{#e03131}{\mathbf{5}}\text{ (ряд.)}\)
\(2)\ 90 : 5 = \textcolor{#e03131}{\mathbf{18}}\text{ (ст.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{18}}\) стульев.

\(1)\ 30 \cdot 30 = \textcolor{#e03131}{\mathbf{900}}\text{ (м}^2\text{)}\)
\(2)\ 900 : 6 \cdot 5 = \textcolor{#e03131}{\mathbf{750}}\text{ (м}^2\text{)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{750}}\) м².

\[\begin{aligned} 40 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{\cdot}}}}\hspace{0.72em}} 30 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 200 &= 1\,000 & \qquad 900 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{:}}}}\hspace{0.72em}} 90 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 90 &= 100 \end{aligned}\]