Страница 25, ГДЗ по математике за 1 класс к тренажёру Погореловой
Вычисления вида □ + 3, □ − 3, □ + 4, □ − 4
\[\begin{aligned} 5 + 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} & \qquad 2 + 4 &= 6 & \qquad 6 + 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 5 &= 3 & \qquad 6 - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} &= 4 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 6 &= 4 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 3 &= 5 & \qquad 6 - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} &= 2 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 4 &= 6 \end{aligned}\]
\[\begin{array}{cc} \begin{array}{c} \boxed{\kern1.5em\mathclap{10}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{3}}}}} \qquad \boxed{\kern1.5em\mathclap{7}\kern1.5em} \end{array} & \qquad \begin{array}{c} \boxed{\kern1.5em\mathclap{8}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\kern1.5em\mathclap{5}\kern1.5em} \qquad \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{3}}}}} \end{array} \\[2.4em] \begin{array}{c} \boxed{\kern1.5em\mathclap{8}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\kern1.5em\mathclap{4}\kern1.5em} \qquad \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{4}}}}} \end{array} & \qquad \begin{array}{c} \boxed{\kern1.5em\mathclap{5}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{3}}}}} \qquad \boxed{\kern1.5em\mathclap{2}\kern1.5em} \end{array} \\[2.4em] \begin{array}{c} \boxed{\kern1.5em\mathclap{9}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\kern1.5em\mathclap{5}\kern1.5em} \qquad \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{4}}}}} \end{array} & \qquad \begin{array}{c} \boxed{\kern1.5em\mathclap{6}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\kern1.5em\mathclap{2}\kern1.5em} \qquad \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{4}}}}} \end{array} \\[2.4em] \begin{array}{c} \boxed{\kern1.5em\mathclap{7}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\kern1.5em\mathclap{3}\kern1.5em} \qquad \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{4}}}}} \end{array} & \qquad \begin{array}{c} \boxed{\kern1.5em\mathclap{9}\kern1.5em} \\ \diagup \qquad \diagdown \\ \boxed{\smash[b]{\underset{\hspace{3em}}{\textcolor{#e03131}{\mathbf{3}}}}} \qquad \boxed{\kern1.5em\mathclap{6}\kern1.5em} \end{array} \end{array}\]
