Страница 7, ГДЗ по математике за 4 класс к самостоятельным и контрольным работам Лопатковой

\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{4}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{7}}3 \\ \smash{\raisebox{0.62em}{$+$}} & 197 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{7}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}157 \\ \smash{\raisebox{0.62em}{$\times$}} & 4 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{8}\kern-0.075em} \end{array}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}8\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{7}}3 \\ \smash{\raisebox{0.62em}{$-$}} & \vphantom{\overset{\bullet}{0}}728 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{4}\kern-0.075em\mathbf{5}\kern-0.075em} \\ & \vphantom{\underline{0}} \\ & \vphantom{\underline{0}} \end{array} \qquad \begin{array}{l|l} \mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}\overset{\mathclap{\textcolor{#1c7ed6}{\frown}}}{23}7 & \underline{\,3\phantom{0}\,} \\ \underline{21}\phantom{0} & \overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{7}\kern-0.075em}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#e03131}{\mathbf{9}\kern-0.075em}} \\ \phantom{0}\mathllap{\smash{\raisebox{-0.5em}{$-$}}\,}27 & \\ \phantom{0}\underline{27} & \\ \phantom{00}0 & \end{array}\]

\[\begin{aligned} & 684 \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} 6 \overset{\textcolor{#1a7f37}{3}}{-} 99 \overset{\textcolor{#1a7f37}{4}}{+} 3 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} 289 \\ & 2 \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} (433 \overset{\textcolor{#1a7f37}{1}}{-} 202) \overset{\textcolor{#1a7f37}{4}}{+} 973 \mathrel{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}{:}}} 7 \\ & b \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} a \overset{\textcolor{#1a7f37}{3}}{-} m \overset{\textcolor{#1a7f37}{4}}{+} x \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} y \\ & a \mathbin{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}\cdot}} (b \overset{\textcolor{#1a7f37}{1}}{-} c) \overset{\textcolor{#1a7f37}{4}}{+} d \mathrel{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}{:}}} z \\ & m \mathrel{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}{:}}} c \overset{\textcolor{#1a7f37}{2}}{+} d \overset{\textcolor{#1a7f37}{3}}{-} x \\ & (a \overset{\textcolor{#1a7f37}{1}}{+} b) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} d \mathbin{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}\cdot}} c \end{aligned}\]

\(12 + 12 \cdot 3 = \textcolor{#e03131}{\mathbf{48}}\text{ (тетр.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{48}}\) тетрадей.

\[\begin{aligned} 1 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 2 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 3 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 4 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 5 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 6 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 7 &= 8 \\ 1 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{\cdot}}}}\hspace{0.72em}} 2 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 3 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 4 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 5 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 6 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 7 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 8 &= 9 \\ 1 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{\cdot}}}}\hspace{0.72em}} 2 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 3 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 4 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 5 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 6 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 7 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 8 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 9 &= 10 \end{aligned}\] \(\textcolor{#808080}{\text{Подходят и другие}}\) \(\textcolor{#808080}{\text{расстановки, например:}}\) \(\textcolor{#808080}{{1 + 2 - 3 + 4 + 5 + 6 - 7 = 8}\text{,}}\) \(\textcolor{#808080}{{1 + 2 \cdot 3 + 4 + 5 - 6 + 7 - 8 = 9}\text{,}}\) \(\textcolor{#808080}{{1 + 2 \cdot 3 - 4 + 5} - {6 + 7 - 8 + 9 = 10}\text{.}}\)