124*0.456-123*0.455怎样用简便算法

来源:学生作业帮助网 编辑:六六作业网 时间:2024/10/04 14:32:42
124*0.456-123*0.455怎样用简便算法124*0.456-123*0.455怎样用简便算法124*0.456-123*0.455怎样用简便算法124*(0.455+0.001)-123*

124*0.456-123*0.455怎样用简便算法
124*0.456-123*0.455怎样用简便算法

124*0.456-123*0.455怎样用简便算法
124*(0.455+0.001)-123*0.455
=(124-123)*0.455+0.124
=0.455+0.124
=0.579

124*(0.455+0.001)-(124-1)*0.455
=124*0.455+0.124-124*0.455+0.455
=0.124+0.455
=0.579