Страница 65, ГДЗ по математике за 4 класс к тренажёру Конновой
Решение уравнений
\[\begin{aligned} 35 + c \cdot 5 &= 800 \\ c \cdot 5 &= 800 - 35 \\ c \cdot 5 &= \textcolor{#e03131}{\mathbf{765}} \\ c &= 765 : 5 \\ c &= \textcolor{#e03131}{\mathbf{153}} \end{aligned}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{8}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{0}}0 \\ \smash{\raisebox{0.62em}{$-$}} & \vphantom{\overset{\bullet}{0}}35 \\ \hline & \textcolor{#e03131}{\mathbf{7}\kern-0.075em\mathbf{6}\kern-0.075em\mathbf{5}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \qquad \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\frown}}}{7}65 & \underline{\,5\phantom{00}\,} \\ \underline{5}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{1}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{5}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{3}\kern-0.075em}} \\ \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}26\phantom{0} & \\ \underline{25}\phantom{0} & \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}15 & \\ \phantom{0}\underline{15} & \\ \phantom{00}0 & \end{array}\] \[\begin{aligned} 40 \cdot (a - 100) &= 480 \\ a - 100 &= 480 : 40 \\ a - 100 &= \textcolor{#e03131}{\mathbf{12}} \\ a &= 12 + 100 \\ a &= \textcolor{#e03131}{\mathbf{112}} \end{aligned}\] \[\begin{aligned} y : 11 &= 1\,008 : 8 \\ y : 11 &= \textcolor{#e03131}{\mathbf{126}} \\ y &= 126 \cdot 11 \\ y &= \textcolor{#e03131}{\mathbf{1\,386}} \end{aligned}\] \[\begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\frown}}}{10}08 & \underline{\,8\phantom{00}\,} \\ \phantom{0}\underline{8}\phantom{00} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{1}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{2}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{6}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}20\phantom{0} & \\ \phantom{0}\underline{16}\phantom{0} & \\ \phantom{00}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}48 & \\ \phantom{00}\underline{48} & \\ \phantom{000}0 & \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}126 \\ \smash{\raisebox{0.62em}{$\times$}} & \vphantom{\overset{\bullet}{0}}11 \\ \hline & 126 \\ \smash{\raisebox{0.62em}{$+$}} & 126\phantom{0} \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{3}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{6}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array}\] \[\begin{aligned} b - 76 \cdot 3 &= 328 \\ b - \textcolor{#e03131}{\mathbf{228}} &= 328 \\ b &= 328 + 228 \\ b &= \textcolor{#e03131}{\mathbf{556}} \end{aligned}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}76 \\ \smash{\raisebox{0.62em}{$\times$}} & 3 \\ \hline & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{8}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}3\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{2}}8 \\ \smash{\raisebox{0.62em}{$+$}} & 228 \\ \hline & \textcolor{#e03131}{\mathbf{5}\kern-0.075em\mathbf{5}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array}\]