Страница 10, ГДЗ по математике за 2 класс к тренажёру Погореловой

\[\begin{aligned} 2\text{ д.} + 3\text{ д.} &= 20 + 30 = \textcolor{#e03131}{\mathbf{50}} \\ 6\text{ д.} - 4\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{20}} \\ 5\text{ д.} + 1\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{60}} \\ 9\text{ д.} - 6\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{30}} \\ 4\text{ д.} + 5\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{90}} \\ 7\text{ д.} - 3\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{40}} \\ 3\text{ д.} + 6\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{90}} \\ 8\text{ д.} - 5\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{30}} \\ 6\text{ д.} + 4\text{ д.} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} = \textcolor{#e03131}{\mathbf{100}} \end{aligned}\]

\[\begin{aligned} 9\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4\text{ д.}}}}{-} 5\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 6\text{ д.} \\ 4\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 8\text{ д.}}}}{+} 4\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 8\text{ д.} \\ 6\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 3\text{ д.}}}}{-} 3\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 2\text{ д.} \\ 5\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 7\text{ д.}}}}{+} 2\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 9\text{ д.} \\ 8\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2\text{ д.}}}}{-} 6\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 3\text{ д.} \\ 3\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 8\text{ д.}}}}{+} 5\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 7\text{ д.} \\ 9\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2\text{ д.}}}}{-} 7\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 1\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 5\text{ д.}}}}{+} 4\text{ д.} \\ 4\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 6\text{ д.}}}}{+} 2\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 9\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 6\text{ д.}}}}{-} 3\text{ д.} \\ 8\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4\text{ д.}}}}{-} 4\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 6\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 5\text{ д.}}}}{-} 1\text{ д.} \\ 2\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4\text{ д.}}}}{+} 2\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 6\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4\text{ д.}}}}{-} 2\text{ д.} \\ 5\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4\text{ д.}}}}{-} 1\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 2\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 5\text{ д.}}}}{+} 3\text{ д.} \\ 1\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2\text{ д.}}}}{+} 1\text{ д.} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 4\text{ д.} \overset{\mathclap{\textcolor{#808080}{\scriptstyle 1\text{ д.}}}}{-} 3\text{ д.} \end{aligned}\]