Страница 17, ГДЗ по математике за 2 класс к тренажёру Погореловой

\[\begin{aligned} 74 - 2 &= 70 + (4 - 2) = \textcolor{#e03131}{\mathbf{72}} \\ 28 - 5 &= 20 + (\boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}) = \textcolor{#e03131}{\mathbf{23}} \\ 57 - 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + (\boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} - \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}) = \textcolor{#e03131}{\mathbf{54}} \\ 15 - 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\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} - \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}) = \textcolor{#e03131}{\mathbf{11}} \\ 89 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + (\boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}) = \textcolor{#e03131}{\mathbf{82}} \\ 36 - 20 &= 30 - 20 + 6 = \textcolor{#e03131}{\mathbf{16}} \\ 64 - 30 &= \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{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} = \textcolor{#e03131}{\mathbf{34}} \\ 87 - 60 &= \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{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} = \textcolor{#e03131}{\mathbf{27}} \\ 93 - 50 &= \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{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} + \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} = \textcolor{#e03131}{\mathbf{43}} \\ 52 - 10 &= \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} + \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} = \textcolor{#e03131}{\mathbf{42}} \end{aligned}\]

\[\begin{aligned} 94 - 2 &= \textcolor{#e03131}{\mathbf{92}} & \qquad 53 - 20 &= \textcolor{#e03131}{\mathbf{33}} & \qquad 45 - 3 &= \textcolor{#e03131}{\mathbf{42}} \\ 58 - 5 &= \textcolor{#e03131}{\mathbf{53}} & \qquad 26 - 5 &= \textcolor{#e03131}{\mathbf{21}} & \qquad 84 - 20 &= \textcolor{#e03131}{\mathbf{64}} \\ 58 - 50 &= \textcolor{#e03131}{\mathbf{8}} & \qquad 78 - 40 &= \textcolor{#e03131}{\mathbf{38}} & \qquad 67 - 3 &= \textcolor{#e03131}{\mathbf{64}} \\ 85 - 2 &= \textcolor{#e03131}{\mathbf{83}} & \qquad 62 - 1 &= \textcolor{#e03131}{\mathbf{61}} & \qquad 36 - 4 &= \textcolor{#e03131}{\mathbf{32}} \\ 49 - 7 &= \textcolor{#e03131}{\mathbf{42}} & \qquad 97 - 60 &= \textcolor{#e03131}{\mathbf{37}} & \qquad 79 - 6 &= \textcolor{#e03131}{\mathbf{73}} \\ 28 - 5 &= \textcolor{#e03131}{\mathbf{23}} & \qquad 16 - 5 &= \textcolor{#e03131}{\mathbf{11}} & \qquad 19 - 7 &= \textcolor{#e03131}{\mathbf{12}} \\ 44 - 3 &= \textcolor{#e03131}{\mathbf{41}} & \qquad 46 - 3 &= \textcolor{#e03131}{\mathbf{43}} & \qquad 39 - 8 &= \textcolor{#e03131}{\mathbf{31}} \end{aligned}\]