Question

0.23x0.25x4的简便计算？

Answer 1

0.23*0.25*4简便计算方法：
=0.23*(0.25*4)
=0.23*1
=0.23

Answer 2

乘法交换律
原式＝0.25×4×0.23
＝1×0.23
＝0.23