0.75×0.7×0.4的简便计算

0.75×0.7×0.4的简便计算
2025-03-20 08:15:57
推荐回答(4个)
回答1:

乘法互换率,0.75先和0.4乘,得到0.3。0.3再和0.4相乘得到0.12

回答2:

=0.25*3*0.7*0.4
=0.25*0.4*2.1
=0.1*2.1
=0.21

回答3:

=(0.75✘0.4)✘0.7
=0.3✘0.7
=0.21

回答4:

0.75×0.7×0.4
=0.75×0.4×0.7
=0.3×0.7
=0.21