Страница 20, ГДЗ по математике за 4 класс к самостоятельным и контрольным работам Лопатковой
Нумерация. Самостоятельная работа № 6. Вариант 1
\[\begin{aligned} 25\,146 &= \textcolor{#e03131}{\mathbf{20\,000 + 5\,000 + 100 + 40 + 6}} \\ 307\,005 &= \textcolor{#e03131}{\mathbf{300\,000 + 7\,000 + 5}} \\ 45\,072 &= \textcolor{#e03131}{\mathbf{40\,000 + 5\,000 + 70 + 2}} \end{aligned}\]
\(815 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 123}}}{-} 692 = 738 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 123}}\rule[-0.35em]{0pt}{0.35em}}{:} 6\) \(\textcolor{#e03131}{\textbf{— верно}}\)
\(238 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 714}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 3 = 375 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 714}}}{+} 339\) \(\textcolor{#e03131}{\textbf{— верно}}\)
\[\begin{aligned} 155\,349 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 155\,350 & \qquad 176\,749 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 175\,749 \\ 49\,999 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 50\,000 & \qquad 234\,513 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 234\,531 \\ 87\,284 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 87\,283 & \qquad 652\,348 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 652\,248 \end{aligned}\]
\(1)\ 7 \cdot 8 = \textcolor{#e03131}{\mathbf{56}}\text{ (р.)}\)
\(2)\ 7 + 56 = \textcolor{#e03131}{\mathbf{63}}\text{ (р.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{63}}\) р.
\[\textcolor{#e03131}{\boldsymbol{(10 \overset{\textcolor{#1a7f37}{1}}{-} 4 \overset{\textcolor{#1a7f37}{2}}{+} 2) \mathrel{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}{:}}} 4 \mathbin{\overset{\textcolor{#1a7f37}{4}}{\vphantom{+}\cdot}} 5 = 10}}\]