列竖式计算.27.39+8.51=6.78+17.5=30.4﹣8.75=10.03﹣8.97=
(1)×39 + ×27 (2)18.25×11 - 17÷ (1 - )
(1)64× (2) 54÷17
(1)×8(2)75×
计算:(9+7)÷(+)
计算:3×25 + 37.9×6