1.255.3+1.254.3-1.25*0.4怎么做

分类: 作业答案 • 2022-01-09 18:03:51

问题描述：

1.25*5.3+1.25*4.3-1.25*0.4怎么做

答

1.25*5.3+1.25*4.3-1.25*0.4
=1.25*（5.3+4.3-0.4）
=1.25*9.2
=1.25*4*2.3
=5*2.3
=11.5

1.25*5.3+1.25*4.3-1.25*0.4怎么做