Страница 20, ГДЗ по математике за 3 класс к тренажёру Погореловой
Умножение и деление на 8 и 9
\[\begin{aligned} 4 \cdot 8 &= \textcolor{#e03131}{\mathbf{32}} & \qquad 81 : 9 &= \textcolor{#e03131}{\mathbf{9}} & \qquad 6 \cdot 9 &= \textcolor{#e03131}{\mathbf{54}} \\ 64 : 8 &= \textcolor{#e03131}{\mathbf{8}} & \qquad 8 \cdot 8 &= \textcolor{#e03131}{\mathbf{64}} & \qquad 72 : 8 &= \textcolor{#e03131}{\mathbf{9}} \\ 8 \cdot 9 &= \textcolor{#e03131}{\mathbf{72}} & \qquad 56 : 8 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 7 \cdot 8 &= \textcolor{#e03131}{\mathbf{56}} \\ 63 : 9 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 7 \cdot 9 &= \textcolor{#e03131}{\mathbf{63}} & \qquad 45 : 9 &= \textcolor{#e03131}{\mathbf{5}} \\ 6 \cdot 8 &= \textcolor{#e03131}{\mathbf{48}} & \qquad 72 : 9 &= \textcolor{#e03131}{\mathbf{8}} & \qquad 9 \cdot 9 &= \textcolor{#e03131}{\mathbf{81}} \end{aligned}\]
\[\begin{aligned} 8 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} &= 48 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} : 9 &= 9 & \qquad 9 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} &= 63 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} : 9 &= 8 & \qquad 8 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} &= 32 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} : 8 &= 3 \\ 9 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} &= 54 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} : 8 &= 8 & \qquad 8 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} &= 40 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} : 8 &= 7 & \qquad 9 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} &= 45 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} : 9 &= 6 \end{aligned}\]
\[\begin{aligned} 64 : 8 \cdot 7 &= \textcolor{#e03131}{\mathbf{56}} & \qquad 72 : 9 \cdot 8 &= \textcolor{#e03131}{\mathbf{64}} \\ 81 : 9 \cdot 8 &= \textcolor{#e03131}{\mathbf{72}} & \qquad 48 : 8 \cdot 4 &= \textcolor{#e03131}{\mathbf{24}} \\ 72 : 8 \cdot 6 &= \textcolor{#e03131}{\mathbf{54}} & \qquad 63 : 9 \cdot 5 &= \textcolor{#e03131}{\mathbf{35}} \\ 56 : 8 \cdot 9 &= \textcolor{#e03131}{\mathbf{63}} & \qquad 54 : 9 \cdot 6 &= \textcolor{#e03131}{\mathbf{36}} \\ 45 : 9 \cdot 5 &= \textcolor{#e03131}{\mathbf{25}} & \qquad 32 : 8 \cdot 9 &= \textcolor{#e03131}{\mathbf{36}} \end{aligned}\]
