一点二五乘九点一乘零点七加一点二五乘九点一乘零点一用简便﷿

2025-03-23 10:25:08
推荐回答(1个)
回答1:

1.25*9.1*0.7+1.25*9.1*0.1
=1.25*9.1*(0.7+0.1)
=1.25*9.1*0.8
=1.25*0.8*9.1
=1*9.1
=9.1