Часть 1 страница 69, ГДЗ по математике за 2 класс к рабочей тетради Моро

\[\begin{aligned} 22 - 7 &= \textcolor{#e03131}{\mathbf{15}} & \qquad 93 - 4 &= \textcolor{#e03131}{\mathbf{89}} & \qquad 28 + 9 &= \textcolor{#e03131}{\mathbf{37}} \\ 32 - 7 &= \textcolor{#e03131}{\mathbf{25}} & \qquad 73 - 4 &= \textcolor{#e03131}{\mathbf{69}} & \qquad 38 + 9 &= \textcolor{#e03131}{\mathbf{47}} \\ 42 - 7 &= \textcolor{#e03131}{\mathbf{35}} & \qquad 53 - 4 &= \textcolor{#e03131}{\mathbf{49}} & \qquad 48 + 9 &= \textcolor{#e03131}{\mathbf{57}} \\ \textcolor{#e03131}{\boldsymbol{52 - 7}} &\textcolor{#e03131}{\boldsymbol{{} = 45}} & \qquad \textcolor{#e03131}{\boldsymbol{33 - 4}} &\textcolor{#e03131}{\boldsymbol{{} = 29}} & \qquad \textcolor{#e03131}{\boldsymbol{58 + 9}} &\textcolor{#e03131}{\boldsymbol{{} = 67}} \\ \textcolor{#e03131}{\boldsymbol{62 - 7}} &\textcolor{#e03131}{\boldsymbol{{} = 55}} & \qquad \textcolor{#e03131}{\boldsymbol{13 - 4}} &\textcolor{#e03131}{\boldsymbol{{} = 9}} & \qquad \textcolor{#e03131}{\boldsymbol{68 + 9}} &\textcolor{#e03131}{\boldsymbol{{} = 77}} \end{aligned}\] \(\textcolor{#808080}{\text{Уменьшаемое увеличивается на}}\) \(\textcolor{#808080}{\text{10 — разность тоже.}}\)
\(\textcolor{#808080}{\text{Уменьшаемое уменьшается на}}\) \(\textcolor{#808080}{\text{20 — разность тоже.}}\)
\(\textcolor{#808080}{\text{Первое слагаемое увеличивается}}\) \(\textcolor{#808080}{\text{на 10 — сумма}}\) \(\textcolor{#808080}{\text{тоже.}}\)

\[\begin{array}{|c|c|c|c|c|c|c|} \hline k & 13 & 25 & 34 & 81 & 65 & 42 \\ \hline k - 7 & \textcolor{#e03131}{\mathbf{6}} & \textcolor{#e03131}{\mathbf{18}} & \textcolor{#e03131}{\mathbf{27}} & \textcolor{#e03131}{\mathbf{74}} & \textcolor{#e03131}{\mathbf{58}} & \textcolor{#e03131}{\mathbf{35}} \\ \hline \end{array}\] 2) Заданы числовые выражения: \({18 + 2};\) \({18 + 10};\) \({18 + 20};\) \({18 + 9}.\)
Запиши буквенное выражение, с помощью которого они получены: \(\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\mathrlap{\hspace{0.2875em}\mathclap{\smash{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}}}\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\mathrlap{\hspace{0.2875em}\mathclap{\smash{\textcolor{#e03131}{\boldsymbol{a}}}}}\phantom{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}\text{.}\) Запиши, при каких значениях буквы они получены: \[\textcolor{#e03131}{\boldsymbol{a = 2;}}\quad \textcolor{#e03131}{\boldsymbol{a = 10;}}\quad \textcolor{#e03131}{\boldsymbol{a = 20;}}\quad \textcolor{#e03131}{\boldsymbol{a = 9}}\]

\[\begin{aligned} \overset{\textcolor{#808080}{\scriptstyle 20\text{ дм}}}{2\text{ м}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 7\text{ дм} & \qquad \overset{\textcolor{#808080}{\scriptstyle 35\text{ см}}}{3\text{ дм }5\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 33\text{ см} \\ \overset{\textcolor{#808080}{\scriptstyle 30\text{ см}}}{3\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 13\text{ см} & \qquad 9\text{ м} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 9\text{ дм}}}{90\text{ см}} \\ \overset{\textcolor{#808080}{\scriptstyle 80\text{ см}}}{8\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 8\text{ см} & \qquad \overset{\textcolor{#808080}{\scriptstyle 44\text{ см}}}{4\text{ дм }4\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 40\text{ см} \end{aligned}\]