Ответ:
\(450 : 50 = 9\); \(630 : 70 = 9\); \(670 - 600 = 70\); \(315 - 10 = 305\); \(18 \cdot 5 = 90\); \(27 \cdot 6 = 162\); \(85 : 5 = 17\); \(78 : 6 = 13\); \(36 : 18 = 2\); \(56 : 14 = 4\).
\(450 : 50 = 9\); \(630 : 70 = 9\); \(670 - 600 = 70\); \(315 - 10 = 305\); \(18 \cdot 5 = 90\); \(27 \cdot 6 = 162\); \(85 : 5 = 17\); \(78 : 6 = 13\); \(36 : 18 = 2\); \(56 : 14 = 4\).