Страница 53, ГДЗ по математике за 2 класс к проверочным работам Волковой. Серия "Школа России" к УМК Моро
Умножение и деление. Проверочная работа 1. Вариант 2
\[\begin{aligned} 4 + 4 + 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 12 + 12 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \end{aligned}\] \[4 \cdot 3 = \textcolor{#e03131}{\mathbf{12}} \qquad 12 \cdot 2 = \textcolor{#e03131}{\mathbf{24}}\] \[\begin{aligned} 8 + 8 + 5 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \qquad 43 + 34 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \end{aligned}\]
\[\begin{aligned} 8 \cdot 3 &= 8 + 8 + 8 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \\ 30 \cdot 2 &= 30 + 30 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \\ 21 \cdot 4 &= 21 + 21 + 21 + 21 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \end{aligned}\]
\(6 \cdot 3 = 6 + 6 + 6 = \textcolor{#e03131}{\mathbf{18}}\text{ (п.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{18}}\) пятен.
\[\begin{aligned} 8 \cdot 3 &= 24 & \qquad 9 \cdot 2 &= 18 & \qquad 4 \cdot 7 &= 28 \\ 8 \cdot 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 9 \cdot 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} & \qquad 4 \cdot 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \end{aligned}\]