Часть 1 страница 53, ГДЗ по математике за 2 класс к рабочей тетради Моро
Периметр многоугольника
Закрась карточку с правильным ответом. \[\textcolor{#e03131}{\textbf{ДА}}\] \(68 + 32 = \textcolor{#e03131}{\mathbf{100}}\text{ (р.)}\)
\[\begin{array}{rcl} \boxed{70 - 5} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{70 - 3 - 2} \\[4pt] \boxed{47 - 8} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{47 - 3 - 5} \\[4pt] \boxed{63 - 3 - 1} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{63 - 4} \\[4pt] \boxed{81 - 7} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \boxed{81 - 3 - 4} \end{array}\]
\[\begin{array}{|c|c|c|c|c|c|c|c|} \hline \text{Слагаемое} & 8 & 10 & \textcolor{#e03131}{\mathbf{12}} & 14 & \textcolor{#e03131}{\mathbf{16}} & \textcolor{#e03131}{\mathbf{18}} & \textcolor{#e03131}{\mathbf{20}} \\ \hline \text{Слагаемое} & \textcolor{#e03131}{\mathbf{19}} & 18 & 17 & \textcolor{#e03131}{\mathbf{16}} & 15 & \textcolor{#e03131}{\mathbf{14}} & \textcolor{#e03131}{\mathbf{13}} \\ \hline \text{Сумма} & 27 & \textcolor{#e03131}{\mathbf{28}} & 29 & 30 & 31 & \textcolor{#e03131}{\mathbf{32}} & \textcolor{#e03131}{\mathbf{33}} \\ \hline \end{array}\] \(\textcolor{#808080}{\text{Первое слагаемое увеличивается}}\) \(\textcolor{#808080}{\text{на 2, второе}}\) \(\textcolor{#808080}{\text{уменьшается на 1,}}\) \(\textcolor{#808080}{\text{сумма увеличивается на}}\) \(\textcolor{#808080}{\text{1.}}\)
\[\begin{aligned} 28 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 30}}}{+} 2 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 28 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 31}}}{+} 3 & \qquad 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 33}}}{-} 7 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 34}}}{-} 6 \\ 34 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 39}}}{+} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 35 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 39}}}{+} 4 & \qquad 89 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 81}}}{-} 8 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 90 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 82}}}{-} 8 \\ 43 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 50}}}{+} 7 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 43 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 51}}}{+} 8 & \qquad 56 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 6}}}{-} 50 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 60 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 10}}}{-} 50 \end{aligned}\]
