Страница 40, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России
3 класс. Итоговая контрольная работа за I четверть. Вариант 1
\[\begin{aligned} &\begin{aligned} 1) & & 6 \cdot 4 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 3 \cdot 8 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 9 \cdot 5 &= \textcolor{#e03131}{\mathbf{45}} \\ & & 9 \cdot 2 &= \textcolor{#e03131}{\mathbf{18}} & \qquad 4 \cdot 9 &= \textcolor{#e03131}{\mathbf{36}} & \qquad 7 \cdot 7 &= \textcolor{#e03131}{\mathbf{49}} \\ & & 48 : 8 &= \textcolor{#e03131}{\mathbf{6}} & \qquad 28 : 4 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 27 : 9 &= \textcolor{#e03131}{\mathbf{3}} \\ & & 54 : 6 &= \textcolor{#e03131}{\mathbf{9}} & \qquad 32 : 8 &= \textcolor{#e03131}{\mathbf{4}} & \qquad 21 : 3 &= \textcolor{#e03131}{\mathbf{7}} \end{aligned} \\[10pt] &\begin{aligned} 2) & & 43 + 38 &= \textcolor{#e03131}{\mathbf{81}} & \qquad 80 - 56 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 43 \overset{\textcolor{#1a7f37}{2}}{-} (12 \overset{\textcolor{#1a7f37}{1}}{-} 9) &= \textcolor{#e03131}{\mathbf{40}} \end{aligned} \end{aligned}\]
\[\begin{aligned} 54 - x &= 6 & \qquad x + 23 &= 73 \\ x &= 54 - 6 & \qquad x &= 73 - 23 \\ x &= \textcolor{#e03131}{\mathbf{48}} & \qquad x &= \textcolor{#e03131}{\mathbf{50}} \end{aligned}\]
\(1)\ 10 + 25 = \textcolor{#e03131}{\mathbf{35}}\text{ (п.)}\)
\(2)\ 65 - 35 = \textcolor{#e03131}{\mathbf{30}}\text{ (п.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{30}}\) пачек.
\(3 \cdot 4 = \textcolor{#e03131}{\mathbf{12}}\text{ (гр.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{12}}\) грядок.
\[{\hspace{0.673em}\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{8.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{8em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{-4em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{-3.955em}\textcolor{#e03131}{\mathclap{\raisebox{0.88em}{\textbf{\textit{A}}}}}\hspace{4em}\textcolor{#e03131}{\mathclap{\raisebox{0.88em}{\textbf{\textit{C}}}}}\hspace{4em}\textcolor{#e03131}{\mathclap{\raisebox{0.88em}{\textbf{\textit{B}}}}}\hspace{0.718em}}\]
\(AC = \textcolor{#e03131}{\mathbf{4}}\text{ см}\)
Отрезков \(\textcolor{#e03131}{\mathbf{3}}\): \(AB\), \(AC\), \(CB\).