0.4x8x(0.125 2.5)的简便计算方法

2025-03-23 02:54:18
推荐回答(1个)
回答1:

原式
=0.4x8x(0.125+2.5)
=0.4x8x0.125+0.4x8x2.5
=0.4x(8x0.125)+(0.4x2.5)x8
=0.4x1+1x8
=0.4+8
=8.4

供参考。