Решебник по математике 4 класс Петерсон рабочая тетрадь Часть 1, 2, 3 Часть 1 | Страница 26

\[\boxed{Страница\ 26.}\]

\[\boxed{\mathbf{3.}}\]

\[a \uparrow \cdot b = c \uparrow\]

\[a \downarrow \cdot b = c \downarrow\]

\[a \cdot b \uparrow = c \uparrow\]

\[a \cdot b \downarrow = c \downarrow\]

\[a \uparrow \ :b = c \uparrow\]

\[a \downarrow \ :b = c \downarrow\]

\[a\ :b \uparrow = c \downarrow\]

\[a\ :b \downarrow = c \uparrow\]

\[\boxed{\mathbf{4.}}\]

\[k \cdot 4 < k \cdot 7\]

\[8 \cdot c > 2 \cdot c\]

\[24\ :m > 18\ :m\]

\[30\ :n < 40\ :n\]

\[x\ :5 > x\ :9\]

\[y\ :6 < y\ :3\]

\[\boxed{\mathbf{5.}}\]

\[3 \leq x \leq 7\]

\[2 < x \leq 7\]

\[2 < x < 8\]

\[3 \leq x < 8\]

\[\boxed{\mathbf{6.}}\]

\[\textbf{а)}\ (6 + x \cdot 3)\ :16 = 6\]

\[6 + x \cdot 3 = 6 \cdot 16\]

\[6 + x \cdot 3 = 96\]

\[x \cdot 3 = 96 - 6\]

\[x \cdot 3 = 90\]

\[x = 90\ :3\]

\[x = 30.\]

\[\textbf{б)}\ 600\ :(24 - x) - 4 = 36\]

\[600\ :(24 - x) = 36 + 4\]

\[600\ :(24 - x) = 40\]

\[24 - x = 600\ :40\]

\[24 - x = 60\ :4\]

\[24 - x = 15\]

\[x = 24 - 15\]

\[x = 9.\ \]

\[\boxed{\mathbf{7.}}\]

\[1)\ 480\ :2 = 240\ (фантиков) -\]

\[красные.\]

\[2)\ 480\ :3 = 160\ (фантиков) -\]

\[синие.\]

\[3)\ 480 - (240 + 160) =\]

\[= 480 - 400 = 80\ (фантиков) -\]

\[зеленые.\]

\[Ответ:80\ фантиков.\]