计算(1)(+11)+(―12.1)(2)(-2.4)+(+2.4)(3)(+4)―(―3)(4) 0―(―) (5)(―)―(+)(6) ―3―4+19―11 (7) ―+―
计算:
计算: ( - 2 ) 2 - | - 1 | + ( 2013 - π ) 0 - 1 2 - 1 .
计算:.