Страница 53, ГДЗ по математике за 2 класс к тренажёру Погореловой
Умножение и деление на 7
\[7 \quad 14 \quad \textcolor{#e03131}{\mathbf{21}} \quad \textcolor{#e03131}{\mathbf{28}} \quad \textcolor{#e03131}{\mathbf{35}} \quad \textcolor{#e03131}{\mathbf{42}} \quad \textcolor{#e03131}{\mathbf{49}} \quad \textcolor{#e03131}{\mathbf{56}} \quad \textcolor{#e03131}{\mathbf{63}} \quad 70\] \[70 \quad 63 \quad \textcolor{#e03131}{\mathbf{56}} \quad \textcolor{#e03131}{\mathbf{49}} \quad \textcolor{#e03131}{\mathbf{42}} \quad \textcolor{#e03131}{\mathbf{35}} \quad \textcolor{#e03131}{\mathbf{28}} \quad \textcolor{#e03131}{\mathbf{21}} \quad \textcolor{#e03131}{\mathbf{14}} \quad 7\]
\[\begin{aligned} 7 + 7 + 7 + 7 &= \textcolor{#e03131}{\mathbf{7}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{4}} = \textcolor{#e03131}{\mathbf{28}} \\ 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7 &= \textcolor{#e03131}{\mathbf{7}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{9}} = \textcolor{#e03131}{\mathbf{63}} \\ 7 + 7 + 7 + 7 + 7 &= \textcolor{#e03131}{\mathbf{7}} \textcolor{#e03131}{\cdot} \textcolor{#e03131}{\mathbf{5}} = \textcolor{#e03131}{\mathbf{35}} \end{aligned}\]
\[\begin{aligned} 7 \cdot 3 &= \textcolor{#e03131}{\mathbf{21}} & \qquad 7 \cdot 7 &= \textcolor{#e03131}{\mathbf{49}} & \qquad 7 \cdot 9 &= \textcolor{#e03131}{\mathbf{63}} \\ 7 \cdot 8 &= \textcolor{#e03131}{\mathbf{56}} & \qquad 7 \cdot 1 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 7 \cdot 5 &= \textcolor{#e03131}{\mathbf{35}} \\ 7 \cdot 4 &= \textcolor{#e03131}{\mathbf{28}} & \qquad 7 \cdot 6 &= \textcolor{#e03131}{\mathbf{42}} & \qquad 7 \cdot 2 &= \textcolor{#e03131}{\mathbf{14}} \end{aligned}\]
\[\begin{aligned} 28 : 7 &= \textcolor{#e03131}{\mathbf{4}} & \qquad 7 : 7 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 49 : 7 &= \textcolor{#e03131}{\mathbf{7}} \\ 56 : 7 &= \textcolor{#e03131}{\mathbf{8}} & \qquad 63 : 7 &= \textcolor{#e03131}{\mathbf{9}} & \qquad 42 : 7 &= \textcolor{#e03131}{\mathbf{6}} \\ 21 : 7 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 35 : 7 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 14 : 7 &= \textcolor{#e03131}{\mathbf{2}} \end{aligned}\]
