Страница 23, ГДЗ по математике за 1 класс к тренажёру Погореловой
Вычисления вида □ + 3, □ − 3, □ + 4, □ − 4
\[\begin{aligned} 4 + 3 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 6 + 4 &= \textcolor{#e03131}{\mathbf{10}} & \qquad 1 + 3 &= \textcolor{#e03131}{\mathbf{4}} \\ 2 + 4 &= \textcolor{#e03131}{\mathbf{6}} & \qquad 7 - 3 &= \textcolor{#e03131}{\mathbf{4}} & \qquad 5 - 3 &= \textcolor{#e03131}{\mathbf{2}} \\ 8 - 3 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 5 + 4 &= \textcolor{#e03131}{\mathbf{9}} & \qquad 3 + 4 &= \textcolor{#e03131}{\mathbf{7}} \\ 1 + 4 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 5 - 4 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 8 - 4 &= \textcolor{#e03131}{\mathbf{4}} \\ 9 - 4 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 3 + 3 &= \textcolor{#e03131}{\mathbf{6}} & \qquad 2 + 3 &= \textcolor{#e03131}{\mathbf{5}} \\ 6 + 3 &= \textcolor{#e03131}{\mathbf{9}} & \qquad 4 - 3 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 9 - 3 &= \textcolor{#e03131}{\mathbf{6}} \\ 7 - 4 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 5 + 3 &= \textcolor{#e03131}{\mathbf{8}} & \qquad 4 + 4 &= \textcolor{#e03131}{\mathbf{8}} \\ 5 + 4 &= \textcolor{#e03131}{\mathbf{9}} & \qquad 6 - 3 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 6 - 4 &= \textcolor{#e03131}{\mathbf{2}} \end{aligned}\]
\[\begin{aligned} 7 - 1 - 3 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 6 - 3 - 1 &= \textcolor{#e03131}{\mathbf{2}} \\ 2 + 2 + 1 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 4 + 1 + 2 &= \textcolor{#e03131}{\mathbf{7}} \\ 9 - 2 - 2 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 8 - 2 - 1 &= \textcolor{#e03131}{\mathbf{5}} \\ 3 + 3 + 1 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 5 + 1 + 2 &= \textcolor{#e03131}{\mathbf{8}} \end{aligned}\]
