Часть 2 страница 72, ГДЗ по математике за 2 класс к рабочей тетради Моро

\(1)\ 12 - 9 = \textcolor{#e03131}{\mathbf{3}}\text{ (кг)}\)
\(2)\ 12 : 3 = \textcolor{#e03131}{\mathbf{4}}\text{ (раза)}\)
Ответ: в \(\textcolor{#e03131}{\mathbf{4}}\) раза.

\[\begin{aligned} 5 \cdot 7 &> 5 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \qquad 7 \cdot 4 &< 7 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} \\ 6 \cdot 7 + 6 &= 6 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \\ 3 \cdot 4 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} &= 23 & \qquad 6 \cdot 7 + 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \\ 7 \cdot 8 - \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} &= 30 \end{aligned}\] \(\textcolor{#808080}{\text{Подходят и: }{5 \cdot 7 > 5 \cdot 0}\text{,}}\) \(\textcolor{#808080}{{5 \cdot 7 > 5 \cdot 1}\text{,}}\) \(\textcolor{#808080}{{5 \cdot 7 > 5 \cdot 2}\text{,}}\) \(\textcolor{#808080}{{5 \cdot 7 > 5 \cdot 3}\text{,}}\) \(\textcolor{#808080}{{5 \cdot 7 > 5 \cdot 4}\text{,}}\) \(\textcolor{#808080}{{5 \cdot 7 > 5 \cdot 5}\text{.}}\)

\[\begin{aligned} 24 : 6 \cdot 9 &= \textcolor{#e03131}{\mathbf{36}} & \qquad 7 \cdot (32 : 8) &= \textcolor{#e03131}{\mathbf{28}} \\ 28 : 7 \cdot 5 &= \textcolor{#e03131}{\mathbf{20}} & \qquad 3 \cdot (16 - 9) &= \textcolor{#e03131}{\mathbf{21}} \\ 4 \cdot 6 : 3 &= \textcolor{#e03131}{\mathbf{8}} & \qquad (15 + 30) : 9 &= \textcolor{#e03131}{\mathbf{5}} \end{aligned}\]

\(1)\ 7 \cdot 9 = \textcolor{#e03131}{\mathbf{63}}\text{ (кв.)}\)
\(2)\ 63 - 30 = \textcolor{#e03131}{\mathbf{33}}\text{ (кв.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{33}}\) квартиры.