3класс

Страница 35, ГДЗ по математике за 3 класс к тренажёру Погореловой

Выберите номер:
4 5 6

Внетабличное умножение и деление

4. Найди значения выражений.

\[\begin{aligned} 86 : 2 &= 80 : 2 + 6 : 2 = \textcolor{#e03131}{\mathbf{40}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{3}} = \textcolor{#e03131}{\mathbf{43}} & \qquad 64 : 2 &= \textcolor{#e03131}{\mathbf{32}} \\ 68 : 4 &= 40 : 4 + 28 : 4 = \textcolor{#e03131}{\mathbf{10}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{7}} = \textcolor{#e03131}{\mathbf{17}} & \qquad 48 : 4 &= \textcolor{#e03131}{\mathbf{12}} \\ 93 : 3 &= 90 : 3 + 3 : 3 = \textcolor{#e03131}{\mathbf{30}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{1}} = \textcolor{#e03131}{\mathbf{31}} & \qquad 96 : 3 &= \textcolor{#e03131}{\mathbf{32}} \\ 39 : 3 &= 30 : 3 + 9 : 3 = \textcolor{#e03131}{\mathbf{10}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{3}} = \textcolor{#e03131}{\mathbf{13}} & \qquad 66 : 3 &= \textcolor{#e03131}{\mathbf{22}} \\ 84 : 4 &= 80 : 4 + 4 : 4 = \textcolor{#e03131}{\mathbf{20}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{1}} = \textcolor{#e03131}{\mathbf{21}} & \qquad 52 : 2 &= \textcolor{#e03131}{\mathbf{26}} \end{aligned}\]

5. Реши примеры.

\[\begin{aligned} 75 : 5 &= \textcolor{#e03131}{\mathbf{15}} & \qquad 28 : 2 &= \textcolor{#e03131}{\mathbf{14}} & \qquad 92 : 2 &= \textcolor{#e03131}{\mathbf{46}} \\ 42 : 3 &= \textcolor{#e03131}{\mathbf{14}} & \qquad 72 : 4 &= \textcolor{#e03131}{\mathbf{18}} & \qquad 84 : 3 &= \textcolor{#e03131}{\mathbf{28}} \\ 60 : 4 &= \textcolor{#e03131}{\mathbf{15}} & \qquad 96 : 3 &= \textcolor{#e03131}{\mathbf{32}} & \qquad 52 : 4 &= \textcolor{#e03131}{\mathbf{13}} \\ 36 : 3 &= \textcolor{#e03131}{\mathbf{12}} & \qquad 86 : 2 &= \textcolor{#e03131}{\mathbf{43}} & \qquad 76 : 2 &= \textcolor{#e03131}{\mathbf{38}} \end{aligned}\]

6. Вставь числа в «окошки».

\[\begin{aligned} \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 4 &= 24 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 2 &= 28 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} : 3 &= 17 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 3 &= 12 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 6 &= 16 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} : 4 &= 23 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} : 3 &= 26 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 3 &= 32 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 4 &= 19 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} : 2 &= 46 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 5 &= 16 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} : 4 &= 17 \end{aligned}\]

Решение подготовила Ольга Хромова, учитель начальных классов
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