计算题. (1)计算:-+20150; (2)+|1-|-()-2.
计算:-2+(π-1)0+tan60°-;
计算:(每小题4分,共16分) ⑴⑵ ⑶ .⑷
计算: (1)(2) (3)(4)
计算:(每小题4分,共8分) (1); (2)
计算: