Часть 1 страница 64, ГДЗ по математике за 4 класс к рабочей тетради Дорофеева

Образец: \[\boxed{\begin{array}{c} 500 : 100 \\ \hline \rule[-1.05em]{0pt}{2.9em}\hspace{1.25em}\mathclap{\vcenter{\textcolor{#272727}{\Huge\bigcirc}}}\mathclap{5}\hspace{1.25em};\ 50;\ 100;\ 500 \end{array}}\] \[\boxed{\begin{array}{c} 60 : 10 \\ \hline \rule[-1.05em]{0pt}{2.9em}60;\ \hspace{1.25em}\mathclap{\vcenter{\textcolor{#e03131}{\Huge\bigcirc}}}\mathclap{6}\hspace{1.25em};\ 610;\ 600 \end{array}} \qquad \boxed{\begin{array}{c} 200 : 100 \cdot 10 \\ \hline \rule[-1.05em]{0pt}{2.9em}2;\ \hspace{1.25em}\mathclap{\vcenter{\textcolor{#e03131}{\Huge\bigcirc}}}\mathclap{20}\hspace{1.25em};\ 200;\ 211 \end{array}}\] \[\boxed{\begin{array}{c} 700 : 100 \cdot 7 \\ \hline \rule[-1.05em]{0pt}{2.9em}7;\ 70;\ \hspace{1.25em}\mathclap{\vcenter{\textcolor{#e03131}{\Huge\bigcirc}}}\mathclap{49}\hspace{1.25em};\ 490 \end{array}} \qquad \boxed{\begin{array}{c} 180 : 10 \cdot 50 \\ \hline \rule[-1.05em]{0pt}{2.9em}18;\ 180;\ 90;\ \hspace{1.25em}\mathclap{\vcenter{\textcolor{#e03131}{\Huge\bigcirc}}}\mathclap{900}\hspace{1.25em} \end{array}}\] \[\boxed{\begin{array}{c} 900 : 10 : 10 \\ \hline \rule[-1.05em]{0pt}{2.9em}\hspace{1.25em}\mathclap{\vcenter{\textcolor{#e03131}{\Huge\bigcirc}}}\mathclap{9}\hspace{1.25em};\ 90;\ 100;\ 900 \end{array}}\]

\(112 : 4 = \textcolor{#e03131}{\mathbf{28}}\text{ (км/ч)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{28}}\) км/ч.

\[\begin{aligned} & \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small 500}\hspace{1.244em} \xrightarrow{:\,2} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{250}}}\hspace{1.244em} \xrightarrow{-\,150} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{100}}}\hspace{1.244em} \xrightarrow{+\,264} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{364}}}\hspace{1.244em} \xrightarrow{:\,4} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{91}}}\hspace{1.244em} \\[0.6em] & \xrightarrow{+\,9} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{100}}}\hspace{1.244em} \xrightarrow{-\,5} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{95}}}\hspace{1.244em} \xrightarrow{+\,55} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{150}}}\hspace{1.244em} \xrightarrow{+\,350} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small 500}\hspace{1.244em} \end{aligned}\] \[\begin{aligned} & \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small 500}\hspace{1.244em} \xrightarrow{\cdot\,2} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\scriptsize \textcolor{#e03131}{\mathbf{1\,000}}}\hspace{1.244em} \xrightarrow{-\,100} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{900}}}\hspace{1.244em} \xrightarrow{:\,3} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{300}}}\hspace{1.244em} \xrightarrow{-\,200} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{100}}}\hspace{1.244em} \\[0.6em] & \xrightarrow{:\,10} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{10}}}\hspace{1.244em} \xrightarrow{-\,5} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{5}}}\hspace{1.244em} \xrightarrow{+\,20} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{25}}}\hspace{1.244em} \xrightarrow{\cdot\,20} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small 500}\hspace{1.244em} \end{aligned}\] \[\hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{900}}}\hspace{1.244em} \xrightarrow{-\,700} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{200}}}\hspace{1.244em} \xrightarrow{:\,2} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\small \textcolor{#e03131}{\mathbf{100}}}\hspace{1.244em}\] \[\hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{95}}}\hspace{1.244em} \xrightarrow{:\,5} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{19}}}\hspace{1.244em} \xrightarrow{-\,14} \hspace{1.244em}\mathclap{\vcenter{\Huge\bigcirc}}\mathclap{\textcolor{#e03131}{\mathbf{5}}}\hspace{1.244em}\] \[\begin{array}{r} \vphantom{\boxed{\mathbf{0}}}\hspace{1.45em}\hspace{0.725em}\mathclap{3}\hspace{0.725em}\hspace{0.725em}\mathclap{\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}}\hspace{0.725em}\hspace{1.45em} \\ \vphantom{\boxed{\mathbf{0}}}\rule[-0.55em]{0pt}{0.55em}\hspace{0.725em}\mathclap{\smash{\raisebox{0.72em}{$\times$}}}\hspace{0.725em}\hspace{1.45em}\hspace{0.725em}\mathclap{3}\hspace{0.725em}\hspace{0.725em}\mathclap{0}\hspace{0.725em} \\ \hline \vphantom{\boxed{\mathbf{0}}}\rule{0pt}{1.2em}\hspace{1.45em}\hspace{0.725em}\mathclap{9}\hspace{0.725em}\hspace{0.725em}\mathclap{6}\hspace{0.725em}\hspace{0.725em}\mathclap{\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}}\hspace{0.725em} \end{array} \qquad \begin{array}{r} \vphantom{\boxed{\mathbf{0}}}\hspace{1.45em}\hspace{0.725em}\mathclap{\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}}\hspace{0.725em}\hspace{0.725em}\mathclap{8}\hspace{0.725em}\hspace{1.45em} \\ \vphantom{\boxed{\mathbf{0}}}\rule[-0.55em]{0pt}{0.55em}\hspace{0.725em}\mathclap{\smash{\raisebox{0.72em}{$\times$}}}\hspace{0.725em}\hspace{1.45em}\hspace{0.725em}\mathclap{\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}}\hspace{0.725em}\hspace{0.725em}\mathclap{0}\hspace{0.725em} \\ \hline \vphantom{\boxed{\mathbf{0}}}\rule{0pt}{1.2em}\hspace{1.45em}\hspace{0.725em}\mathclap{9}\hspace{0.725em}\hspace{0.725em}\mathclap{6}\hspace{0.725em}\hspace{0.725em}\mathclap{0}\hspace{0.725em} \end{array}\]