\[\boxed{\ \mathbf{424\ (424)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
Пояснение.
Решение.
\[1)\ 318 \cdot 78 + 318 \cdot 22 =\]
\[= 318 \cdot (78 + 22) = 318 \cdot 100 =\]
\[= 31\ 800\]
\[2)\ 856 \cdot 92 - 853 \cdot 92 =\]
\[= (856 - 853) \cdot 92 = 3 \cdot 92 =\]
\[= 276\]
\[3)\ 943 \cdot 268 + 943 \cdot 232 =\]
\[= 943 \cdot (268 + 232) =\]
\[= 943 \cdot 500 = 471\ 500\]
\[4)\ 65 \cdot 246 - 65 \cdot 229 - 65 \cdot 17 =\]
\[= 65 \cdot (246 - 229 - 17) =\]
\[= 65 \cdot (246 - 246) = 65 \cdot 0 = 0\]
\[\boxed{\mathbf{424}\mathbf{\ (388)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 603 \cdot 84 + 2536 = 53\ 188\]
\[2)\ 318 \cdot 56 - 5967 = 11\ 841\]
\[3)\ 64 \cdot 96 - 77 = 6067\]
\[4)\ 64 \cdot (96 - 77) = 1216\]