\[\boxed{\text{211.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[Проверка:\]
\[144 + 12 = 156.\]
\[248 + 30 = 278.\]
\[336 + 10 = 346.\]
\[438 + 7 = 445.\ \]