2.5x(40十4十0.4)简便计算?

2025-02-27 03:42:32
推荐回答(4个)
回答1:

=2.5x40+2.5x4+2.5x0.4=100+10+1=111

回答2:

(2.5x40)+(4+0.4)=100+4.4 =104.4

回答3:

2.5x40+2.5x4+2.5x0.4=111

回答4:

25X40+4xo.4