\[\boxed{\text{Страница}\text{\ 4.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[4.\]
\[425 \cdot 8 < 425 \cdot 12\]
\[1520 \cdot 30 > 1520 \cdot 15\]
\[417 \cdot 48 < 568 \cdot 96\]
\[402 \cdot 15 = 15 \cdot 402\]
\[5.\]
\[6.\]
\[(627 + 185) \cdot 12 =\]
\[= 627 \cdot 12 + 185 \cdot 12 = 9744\]
\[(1279 - 85) \cdot 70 =\]
\[= 1279 \cdot 70 - 85 \cdot 70 = 83\ 580\]
\[7.\]