ГДЗ по математике 5 класс Ткачева рабочая тетрадь | Страница 35

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

\[1)\ 150\ :30 =\]

\[= (150\ :10)\ :(30\ :10) =\]

\[= 15\ :3 = 5\]

\[2)\ 75\ 000\ :2500 =\]

\[= (75\ 000\ :100)\ :(2500\ :100) =\]

\[= 750\ :25 = 30\]

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

\[1)\ 205\ :5 = (205 \cdot 2)\ :(5 \cdot 2) =\]

\[= 210\ :10 = 21\]

\[2)\ 325\ :5 = (325 \cdot 2)\ :(5 \cdot 2) =\]

\[= 650\ :10 = 65\]

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

\[1)\ (600 + 21)\ :3 =\]

\[= 600\ :3 + 21\ :3 =\]

\[= 200 + 7 = 207\]

\[2)\ 432\ :4 = (400 + 32)\ :4 =\]

\[= 400\ :4 + 32\ :4 = 100 + 8 =\]

\[= 108\]

\[3)\ 574\ :7 = (560 + 14)\ :7 =\]

\[= 560\ :7 + 14\ :7 =\]

\[= 80 + 2 = 82\]

\[4)\ 288\ :8 = (240 + 48)\ :8 =\]

\[= 240\ :8 + 48\ :8 =\]

\[= 30 + 6 = 36\]