Решебник по математике 4 класс Моро ФГОС Часть 1, 2 Часть 2 Задание 172

\[\boxed{\text{172.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[x\ :20 = 120\]

\[x = 120 \cdot 20\]

\[x = 2\ 400.\]

\[210\ :x = 70\]

\[x = 210\ :70\]

\[x = 3.\]

\[x = 110\ :110\]

\[x = 1.\]

\[x = 480\ :480\]

\[x = 1.\]

\[x = 0 + 260\]

\[x = 260.\]

\[y = 300 - 0\]

\[y = 300.\ \]