Страница 50, ГДЗ по математике за 3 класс к проверочным работам Волковой. Серия "Школа России" к УМК Моро
Внетабличное умножение и деление. Проверочная работа 2. Вариант 1
\[\begin{aligned} (18 \overset{\textcolor{#1a7f37}{1}}{+} 6) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 6 &= \textcolor{#e03131}{\mathbf{4}} & \qquad (20 \overset{\textcolor{#1a7f37}{1}}{+} 28) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 8 &= \textcolor{#e03131}{\mathbf{6}} \\ (12 \overset{\textcolor{#1a7f37}{1}}{+} 27) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 3 &= \textcolor{#e03131}{\mathbf{13}} & \qquad (15 \overset{\textcolor{#1a7f37}{1}}{+} 15) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 6 &= \textcolor{#e03131}{\mathbf{5}} \\ (16 \overset{\textcolor{#1a7f37}{1}}{+} 24) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 8 &= \textcolor{#e03131}{\mathbf{5}} & \qquad (21 \overset{\textcolor{#1a7f37}{1}}{+} 31) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 4 &= \textcolor{#e03131}{\mathbf{13}} \end{aligned}\]
\[\begin{aligned} 57 : 3 &= (\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + 27) : 3 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} \\ 56 : 2 &= (40 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}) : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \end{aligned}\] 2) Выполни вычисления. \[\begin{aligned} 55 : 5 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \qquad 45 : 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} & \qquad 96 : 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} \\ 64 : 2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 84 : 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \qquad 78 : 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} \end{aligned}\]
1) \[\begin{aligned} 90 : 5 &= \textcolor{#e03131}{\mathbf{18}} & \qquad 76 : 4 &= \textcolor{#e03131}{\mathbf{19}} \end{aligned}\] 2) Выполни деление и проверь умножением. \[\begin{aligned} 72 : 18 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \qquad 42 : 14 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \qquad 95 : 19 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} \end{aligned}\] Проверка: \[\begin{aligned} 18 \cdot 4 &= \textcolor{#e03131}{\mathbf{72}} & \qquad 14 \cdot 3 &= \textcolor{#e03131}{\mathbf{42}} & \qquad 19 \cdot 5 &= \textcolor{#e03131}{\mathbf{95}} \end{aligned}\]
\[\begin{aligned} 17 \cdot 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} & \qquad 26 \cdot 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} & \qquad 37 \cdot 2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \end{aligned}\] Проверка: \[\begin{aligned} 68 : 4 &= \textcolor{#e03131}{\mathbf{17}} & \qquad 78 : 3 &= \textcolor{#e03131}{\mathbf{26}} & \qquad 74 : 2 &= \textcolor{#e03131}{\mathbf{37}} \end{aligned}\]
