§ Вопрос (Стр. 61)
\[\boxed{Вопрос.}\]

\[31\ 010 - (5000 - 3774) =\]
\[= 29\ 784\]

\[(4000 - 500\ :100) \cdot 10 =\]
\[= (4000 - 5) \cdot 10 =\]
\[= 3995 \cdot 10 = 39\ 950\]
\[\boxed{Вопрос.}\]

\[31\ 010 - (5000 - 3774) =\]
\[= 29\ 784\]

\[(4000 - 500\ :100) \cdot 10 =\]
\[= (4000 - 5) \cdot 10 =\]
\[= 3995 \cdot 10 = 39\ 950\]