Часть 1 страница 38, ГДЗ по математике за 4 класс к рабочей тетради Дорофеева
Умножение числа на произведение
\[{\def\arraystretch{1.6}\begin{array}{l} 1)\ 40;\ 60;\ \textcolor{#e03131}{\underline{\boldsymbol{2}\vphantom{(}}};\ \textcolor{#e03131}{\underline{\boldsymbol{10}\vphantom{(}}};\ 5;\ \textcolor{#e03131}{\underline{\boldsymbol{50}\vphantom{(}}}. \\ 2)\ 6;\ 400;\ \textcolor{#e03131}{\underline{\boldsymbol{5}\vphantom{(}}};\ 70;\ \textcolor{#e03131}{\underline{\boldsymbol{20}\vphantom{(}}};\ \textcolor{#e03131}{\underline{\boldsymbol{10}\vphantom{(}}}. \\ 3)\ \textcolor{#e03131}{\underline{\boldsymbol{8}\vphantom{(}}};\ 10;\ 40;\ 500;\ \textcolor{#e03131}{\underline{\boldsymbol{125}\vphantom{(}}}. \\ 4)\ \textcolor{#e03131}{\underline{\boldsymbol{2}\vphantom{(}}};\ \textcolor{#e03131}{\underline{\boldsymbol{25}\vphantom{(}}};\ \textcolor{#e03131}{\underline{\boldsymbol{4}\vphantom{(}}};\ 400;\ \textcolor{#e03131}{\underline{\boldsymbol{5}\vphantom{(}}}. \end{array}}\]
\[\begin{aligned} 2 \cdot (10 \cdot 3) &= \boxed{\smash[b]{\underset{\hspace{1.5em}}{\textcolor{#e03131}{\mathbf{60}}}}}\text{ И} & \qquad 7 \cdot (2 \cdot 50) &= \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{700}}}}}\text{ У} \\ (100 - 4) : 48 &= \boxed{\smash[b]{\underset{\hspace{1em}}{\textcolor{#e03131}{\mathbf{2}}}}}\text{ Х} & \qquad 15 \cdot (4 \cdot 3) &= \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{180}}}}}\text{ М} \\ 540 : 9 : 12 &= \boxed{\smash[b]{\underset{\hspace{1em}}{\textcolor{#e03131}{\mathbf{5}}}}}\text{ А} & \qquad 7 + 165 : 5 &= \boxed{\smash[b]{\underset{\hspace{1.5em}}{\textcolor{#e03131}{\mathbf{40}}}}}\text{ К} \\ (615 - 405) : 70 &= \boxed{\smash[b]{\underset{\hspace{1em}}{\textcolor{#e03131}{\mathbf{3}}}}}\text{ Л} & \qquad 304 + 16 \cdot 6 &= \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{400}}}}}\text{ Й} \\ 180 : 9 \cdot 10 &= \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{200}}}}}\text{ О} \end{aligned}\] \[\begin{array}{|c|c|c|c|c|c|c|} \hline 180 & 60 & 40 & 3 & 700 & 2 & 200 \\ \hline \textcolor{#e03131}{\textbf{М}} & \textcolor{#e03131}{\textbf{И}} & \textcolor{#e03131}{\textbf{К}} & \textcolor{#e03131}{\textbf{Л}} & \textcolor{#e03131}{\textbf{У}} & \textcolor{#e03131}{\textbf{Х}} & \textcolor{#e03131}{\textbf{О}} \\ \hline \end{array}\text{ -}\] \[\begin{array}{|c|c|c|c|c|c|} \hline 180 & 5 & 40 & 3 & 5 & 400 \\ \hline \textcolor{#e03131}{\textbf{М}} & \textcolor{#e03131}{\textbf{А}} & \textcolor{#e03131}{\textbf{К}} & \textcolor{#e03131}{\textbf{Л}} & \textcolor{#e03131}{\textbf{А}} & \textcolor{#e03131}{\textbf{Й}} \\ \hline \end{array}\]
\({\rule{0pt}{1.23em}\boxed{\smash[b]{\underset{\hspace{1em}}{\textcolor{#e03131}{\mathbf{7}}}}}\text{ см}^2 \qquad \rule{0pt}{1.23em}\boxed{\smash[b]{\underset{\hspace{1em}}{\textcolor{#e03131}{\mathbf{8}}}}}\text{ см}^2 \qquad \rule{0pt}{1.23em}\boxed{\smash[b]{\underset{\hspace{1em}}{\textcolor{#e03131}{\mathbf{7}}}}}\text{ см}^2}\)
