2.5×3= 4.5×0.2= 60×0.5= 0.47×30=
2.4÷0.8= 2÷0.4= 1.26÷0.3= 0.045÷9=
2.8-2.8÷7= 27×3.01÷27=
原价:25元/个
现价:14元/个