670.25+2.53.75-4.5*0.25简算

分类: 作业答案 • 2023-01-17 19:04:32

问题描述：

67*0.25+2.5*3.75-4.5*0.25简算
如题

答

67*0.25+2.5*3.75-4.5*0.25
=67×0.25+0.25×37.5-4.5×0.25
＝（67+37.5-4.5）×0.25
＝100×0.25
＝25

67*0.25+2.5*3.75-4.5*0.25简算