12.5乘以0.25加1.25乘7.5用简便计算怎么算?简便计算

分类: 作业答案 • 2021-12-18 16:42:26

问题描述：

12.5乘以0.25加1.25乘7.5用简便计算怎么算?
简便计算

答

12.5*0.25+1.25*7.5
=1.25*2.5+1.25*7.5
=1.25*（2.5+7.5）
=1.25*10
=12.5

答

12.5*0.25+1.25*7.5
=12.5*0.25+12.5*0.75
=12.5*(0.25+0.75)
=12.5*1
=12.5

答

12.5×0.25＋12.5×0.75
=12。5×（0.25＋0.75）
=12.5×1
=12.5

答

原式=1.25*2.5+1.25*7.5=1.25*（2.5+7.5）=12.5

答

12.5×0.25＋1.25×7.5
=1.25×2.5＋1.25×7.5
=1.25×（2.5+7.5）
=1.25×10
=12.5