1.25×0.4×12.5简便运算1.25×4×12.5=5×12.5=62.5
解:1.25Ⅹ0.4X12.5=1.25×(0.4×12.5)=1.25×5=6.25
1.25x0.4x12.5＝0.5x12.5＝6.25
解题过程如下，望采纳原式=0.5×12.5=6.25
