56×1点2-1点4×0点8用递等式计算

56×1点2-1点4×0点8用递等式计算
2024-11-08 04:36:04
推荐回答(3个)
回答1:

原式
=56*1.2-1.4*0.8
=67.2-1.12
=66.08
满意采纳奥

回答2:

回答3:

72.1X0.8X1.25 =72.1X(0.8X1.25) =72.1X1 =72.1