Страница 64, ГДЗ по математике за 1 класс к тренажёру Погореловой

\[\begin{aligned} 14 - 8 &= \textcolor{#e03131}{\cancel{\textcolor{black}{5}}}\;\textcolor{#e03131}{\mathbf{6}} & \qquad 6 + 7 - 5 &= 8 \\ 9 + 9 &= 18 & \qquad 14 - 7 + 9 &= \textcolor{#e03131}{\cancel{\textcolor{black}{15}}}\;\textcolor{#e03131}{\mathbf{16}} \\ 14 - 5 &= \textcolor{#e03131}{\cancel{\textcolor{black}{7}}}\;\textcolor{#e03131}{\mathbf{9}} & \qquad 8 + 6 - 7 &= 7 \\ 17 - 8 &= \textcolor{#e03131}{\cancel{\textcolor{black}{8}}}\;\textcolor{#e03131}{\mathbf{9}} & \qquad 16 - 8 + 5 &= \textcolor{#e03131}{\cancel{\textcolor{black}{12}}}\;\textcolor{#e03131}{\mathbf{13}} \\ 5 + 7 &= 12 & \qquad 9 + 7 - 6 &= 10 \\ 7 + 8 &= \textcolor{#e03131}{\cancel{\textcolor{black}{13}}}\;\textcolor{#e03131}{\mathbf{15}} & \qquad 12 - 5 + 8 &= 15 \\ 19 - 8 &= \textcolor{#e03131}{\cancel{\textcolor{black}{10}}}\;\textcolor{#e03131}{\mathbf{11}} & \qquad 15 - 8 + 4 &= \textcolor{#e03131}{\cancel{\textcolor{black}{12}}}\;\textcolor{#e03131}{\mathbf{11}} \\ 6 + 7 &= \textcolor{#e03131}{\cancel{\textcolor{black}{14}}}\;\textcolor{#e03131}{\mathbf{13}} & \qquad 20 - 4 - 7 &= \textcolor{#e03131}{\cancel{\textcolor{black}{8}}}\;\textcolor{#e03131}{\mathbf{9}} \\ 15 - 9 &= 6 & \qquad 7 + 6 - 4 &= 9 \end{aligned}\]

\[\begin{aligned} 19 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 6 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 4 &= 9 & \qquad 8 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 7 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 5 &= 20 \\ 7 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 8 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 6 &= 9 & \qquad 14 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 6 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 7 &= 15 \\ 19 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 7 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 4 &= 8 & \qquad 9 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 3 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 8 &= 14 \end{aligned}\]