\[\boxed{\text{54.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[1)\ 200 - (80 - 35) \cdot 2 =\]
\[= 200 - 45 \cdot 2 =\]
\[= 200 - 90 = 110.\]
\[2)\ 200 - 80 - 35 \cdot 2 =\]
\[= 120 - 70 = 50.\]
\[3)\ 446 - (46 + 4 \cdot 8) =\]
\[= 446 - (46 + 32) =\]
\[= 446 - 46 - 32 =\]
\[= 400 - 32 = 368.\]
\[4)\ 540 - (90 - 30\ :6) =\]
\[= 540 - (90 - 5) =\]
\[= 540 - 90 + 5 =\]
\[= 450 + 5 = 455.\ \]