ГДЗ по математике 3 класс Петерсон рабочая тетрадь Часть 1, 2, 3 Часть 2 | Страница 63

\[\boxed{\mathbf{Страница\ 63.\ }\mathbf{Еуроки\ - \ ДЗ\ без\ мороки}}\]

\[\boxed{\mathbf{1.\ }}\]

\[\mathbf{1.}\]

\[\textbf{а)}\ S = a \cdot b\]

\[\textbf{б)}\ P = a \cdot 4\]

\[\textbf{в)}\ a = b \cdot c + r\]

\[\textbf{г)}\ V = a \cdot b \cdot c\]

\[\mathbf{2.}\]

\[\mathbf{3.}\]

\[\textbf{а)}\ 230\ :30 = 23\ :3 =\]

\[= 7\ (ост.\ 20)\]

\[\textbf{б)}\ 470\ :70 = 47\ :7 =\]

\[= 6\ (ост.\ 50)\]

\[Проверка:\ \ \ 70 \cdot 6 + 50 = 470.\]

\[5400\ :800 = 54\ :8 =\]

\[= 6\ (ост.\ 600)\]

\[Проверка:\ \ \ 800 \cdot 6 + 600 =\]

\[= 5400.\]

\[\boxed{\mathbf{2.\ }}\]

\[\mathbf{1.}\]

\[\textbf{а)}\ S = a \cdot a\]

\[\textbf{б)}\ P = 2 \cdot (a + b)\]

\[\textbf{в)}\ V = a \cdot a \cdot a\]

\[\textbf{г)}\ a = b \cdot c + r\ \]

\[\mathbf{2.}\]

\[\mathbf{3.}\]

\[\textbf{а)}\ 520\ :60 = 52\ :6 =\]

\[= 8\ (ост.\ 40)\]

\[\textbf{б)}\ 340\ :50 = 34\ :5 =\]

\[= 6\ (ост.\ 40)\]

\[Проверка:\ \ 50 \cdot 6 + 40 = 340.\]

\[4100\ :900 = 41\ :9 =\]

\[= 4\ (ост.\ 500)\]

\[Проверка:\ \ 900 \cdot 4 + 500 =\]

\[= 4100.\]