Страница 51, ГДЗ по математике за 3 класс к проверочным работам Волковой. Серия "Школа России" к УМК Моро
Внетабличное умножение и деление. Проверочная работа 2. Вариант 2
\[\begin{aligned} (25 \overset{\textcolor{#1a7f37}{1}}{+} 15) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 5 &= \textcolor{#e03131}{\mathbf{8}} & \qquad (19 \overset{\textcolor{#1a7f37}{1}}{+} 5) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 3 &= \textcolor{#e03131}{\mathbf{8}} \\ (32 \overset{\textcolor{#1a7f37}{1}}{+} 8) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 4 &= \textcolor{#e03131}{\mathbf{10}} & \qquad (25 \overset{\textcolor{#1a7f37}{1}}{+} 11) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 6 &= \textcolor{#e03131}{\mathbf{6}} \\ (21 \overset{\textcolor{#1a7f37}{1}}{+} 35) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 7 &= \textcolor{#e03131}{\mathbf{8}} & \qquad (30 \overset{\textcolor{#1a7f37}{1}}{+} 18) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 8 &= \textcolor{#e03131}{\mathbf{6}} \end{aligned}\]
\[\begin{aligned} 54 : 3 &= (30 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}) : 3 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \\ 76 : 2 &= (\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + 16) : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \end{aligned}\] 2) Выполни вычисления. \[\begin{aligned} 44 : 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \qquad 63 : 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \qquad 64 : 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} \\ 86 : 2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \qquad 81 : 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} & \qquad 78 : 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} \end{aligned}\]
1) \[\begin{aligned} 70 : 5 &= \textcolor{#e03131}{\mathbf{14}} & \qquad 84 : 6 &= \textcolor{#e03131}{\mathbf{14}} \end{aligned}\] 2) Выполни деление и проверь умножением. \[\begin{aligned} 65 : 13 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} & \qquad 96 : 24 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \qquad 90 : 18 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} \end{aligned}\] Проверка: \[\begin{aligned} 13 \cdot 5 &= \textcolor{#e03131}{\mathbf{65}} & \qquad 24 \cdot 4 &= \textcolor{#e03131}{\mathbf{96}} & \qquad 18 \cdot 5 &= \textcolor{#e03131}{\mathbf{90}} \end{aligned}\]
\[\begin{aligned} 15 \cdot 5 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} & \qquad 24 \cdot 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 39 \cdot 2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \end{aligned}\] Проверка: \[\begin{aligned} 75 : 5 &= \textcolor{#e03131}{\mathbf{15}} & \qquad 72 : 3 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 78 : 2 &= \textcolor{#e03131}{\mathbf{39}} \end{aligned}\]
