Страница 20, ГДЗ по математике за 1 класс к тренажёру Погореловой
Вычитание вида □ − 4
\[\begin{aligned} 9 - 4 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 10 - 4 - 3 &= \textcolor{#e03131}{\mathbf{3}} \\ 5 - 4 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 5 - 3 - 1 &= \textcolor{#e03131}{\mathbf{1}} \\ 6 - 4 &= \textcolor{#e03131}{\mathbf{2}} & \qquad 7 - 1 - 3 &= \textcolor{#e03131}{\mathbf{3}} \\ 4 - 4 &= \textcolor{#e03131}{\mathbf{0}} & \qquad 10 - 2 - 2 &= \textcolor{#e03131}{\mathbf{6}} \\ 7 - 4 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 9 - 2 - 2 &= \textcolor{#e03131}{\mathbf{5}} \end{aligned}\]
\[\begin{aligned} \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 4 &= 4 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 2 - 2 &= 5 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} - 4 &= 2 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 3 - 1 &= 6 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} - 4 &= 1 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} - 1 - 3 &= 3 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 4 &= 5 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 3 - 1 &= 4 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} - 4 &= 3 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} - 2 - 2 &= 2 \end{aligned}\]
