Страница 35, ГДЗ по математике за 2 класс к тренажёру Погореловой

\[\begin{aligned} 45 + 5 &= \textcolor{#e03131}{\mathbf{50}} & \qquad 67 + 3 &= \textcolor{#e03131}{\mathbf{70}} & \qquad 53 + 7 &= \textcolor{#e03131}{\mathbf{60}} \\ 20 - 9 &= \textcolor{#e03131}{\mathbf{11}} & \qquad 40 - 6 &= \textcolor{#e03131}{\mathbf{34}} & \qquad 90 - 8 &= \textcolor{#e03131}{\mathbf{82}} \\ 74 + 6 &= \textcolor{#e03131}{\mathbf{80}} & \qquad 21 + 9 &= \textcolor{#e03131}{\mathbf{30}} & \qquad 48 + 2 &= \textcolor{#e03131}{\mathbf{50}} \\ 90 - 7 &= \textcolor{#e03131}{\mathbf{83}} & \qquad 70 - 3 &= \textcolor{#e03131}{\mathbf{67}} & \qquad 30 - 1 &= \textcolor{#e03131}{\mathbf{29}} \\ 38 + 2 &= \textcolor{#e03131}{\mathbf{40}} & \qquad 16 + 4 &= \textcolor{#e03131}{\mathbf{20}} & \qquad 85 + 5 &= \textcolor{#e03131}{\mathbf{90}} \\ 50 - 4 &= \textcolor{#e03131}{\mathbf{46}} & \qquad 80 - 5 &= \textcolor{#e03131}{\mathbf{75}} & \qquad 60 - 2 &= \textcolor{#e03131}{\mathbf{58}} \end{aligned}\]

\[\begin{aligned} 83 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} &= 90 & \qquad 90 - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} &= 82 \\ 40 - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} &= 35 & \qquad 61 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} &= 70 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 6 &= 54 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 3 &= 17 \\ 17 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} &= 20 & \qquad 75 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} &= 80 \end{aligned}\]

\[\begin{aligned} 70 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 64}}}{-} 6 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 65 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 70}}}{+} 5 & \qquad 50 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 43}}}{-} 7 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 44}}}{+} 4 \\ 30 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 32}}}{+} 2 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 32}}}{-} 8 & \qquad 10 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 19}}}{+} 9 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 20 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 19}}}{-} 1 \\ 90 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 85}}}{-} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 80 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 86}}}{+} 6 & \qquad 60 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 56}}}{-} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 50 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 55}}}{+} 5 \end{aligned}\]