Ответ:

\(450:50=9\); \(630:70=9\); \(670-600=70\); \(315-10=305\); \(18\cdot5=90\); \(27\cdot6=162\); \(85:5=17\); \(78:6=13\); \(36:18=2\); \(56:14=4\).