直接写出得数. 0.44+++0.6 +2×2﹣2÷ (4﹣2)÷(1+2.4) 48200﹣156×720÷39 (3.06÷0.25+2.76)×0.2 [3÷(3﹣2.4×)]×0.2.
竖式计算: 315×3= 375×4=
竖式计算: 708×2= 280×4=
竖式计算: