Страница 11, ГДЗ по математике за 3 класс к тренажёру Погореловой
Повторение. Умножение и деление на 2, 3, 4
\[\begin{aligned} 2 + 2 + 2 + 2 &= \textcolor{#e03131}{\mathbf{2}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{4}} = \textcolor{#e03131}{\mathbf{8}} & \qquad 3 + 3 + 3 + 3 + 3 &= \textcolor{#e03131}{\mathbf{3}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{5}} = \textcolor{#e03131}{\mathbf{15}} \\ 3 + 3 + 3 &= \textcolor{#e03131}{\mathbf{3}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{3}} = \textcolor{#e03131}{\mathbf{9}} & \qquad 4 + 4 + 4 + 4 &= \textcolor{#e03131}{\mathbf{4}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{4}} = \textcolor{#e03131}{\mathbf{16}} \\ 4 + 4 + 4 &= \textcolor{#e03131}{\mathbf{4}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{3}} = \textcolor{#e03131}{\mathbf{12}} & \qquad 2 + 2 + 2 + 2 + 2 &= \textcolor{#e03131}{\mathbf{2}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{5}} = \textcolor{#e03131}{\mathbf{10}} \\ 2 + 2 + 2 &= \textcolor{#e03131}{\mathbf{2}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{3}} = \textcolor{#e03131}{\mathbf{6}} & \qquad 3 + 3 + 3 + 3 &= \textcolor{#e03131}{\mathbf{3}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{4}} = \textcolor{#e03131}{\mathbf{12}} \end{aligned}\]
\[\begin{aligned} 7 \cdot 3 &= \textcolor{#e03131}{\mathbf{21}} & \qquad 2 \cdot 2 &= \textcolor{#e03131}{\mathbf{4}} & \qquad 3 \cdot 6 &= \textcolor{#e03131}{\mathbf{18}} \\ 4 \cdot 3 &= \textcolor{#e03131}{\mathbf{12}} & \qquad 4 \cdot 2 &= \textcolor{#e03131}{\mathbf{8}} & \qquad 5 \cdot 4 &= \textcolor{#e03131}{\mathbf{20}} \\ 9 \cdot 4 &= \textcolor{#e03131}{\mathbf{36}} & \qquad 8 \cdot 4 &= \textcolor{#e03131}{\mathbf{32}} & \qquad 4 \cdot 4 &= \textcolor{#e03131}{\mathbf{16}} \\ 2 \cdot 6 &= \textcolor{#e03131}{\mathbf{12}} & \qquad 8 \cdot 3 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 4 \cdot 2 &= \textcolor{#e03131}{\mathbf{8}} \\ 7 \cdot 4 &= \textcolor{#e03131}{\mathbf{28}} & \qquad 6 \cdot 4 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 4 \cdot 7 &= \textcolor{#e03131}{\mathbf{28}} \end{aligned}\]
\[\begin{aligned} 12 : 2 &= \textcolor{#e03131}{\mathbf{6}} & \qquad 8 : 2 &= \textcolor{#e03131}{\mathbf{4}} & \qquad 27 : 3 &= \textcolor{#e03131}{\mathbf{9}} \\ 28 : 4 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 8 : 4 &= \textcolor{#e03131}{\mathbf{2}} & \qquad 32 : 4 &= \textcolor{#e03131}{\mathbf{8}} \\ 20 : 4 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 24 : 4 &= \textcolor{#e03131}{\mathbf{6}} & \qquad 36 : 4 &= \textcolor{#e03131}{\mathbf{9}} \\ 21 : 3 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 9 : 3 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 18 : 2 &= \textcolor{#e03131}{\mathbf{9}} \\ 10 : 2 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 6 : 2 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 15 : 3 &= \textcolor{#e03131}{\mathbf{5}} \end{aligned}\]
