\[\boxed{\text{308\ (308).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[(640 - 480)\ :4 + 360 =\]
\[= 40 + 360 = 400\]
\[120 + 120\ :(4 + 6) =\]
\[= 120 + 12 = 132\]
\[160\ :(4 \cdot 2) + 10 =\]
\[= 160\ :8 + 10 = 30\]
\[(60 - 54\ :6)\ :3 =\]
\[= (60 - 9)\ :3 = 17\]