计算 (1)(-4)×(-6) (2) ×(―) (3) 0÷(―2015) (4)(―0.25)÷(―4) (5)(―)×(―5)××(―2) (6)(―)÷(―)×(―) (7)(-36)×(―+)
计算: (1)÷; (2)(1+)÷
计算:
计算:(1); (2).
(1)计算: (2)计算: