七点五乘于四分之三加零点七五乘于二分之一减零点七五简便计算怎么做

2025-03-01 09:33:14
推荐回答(1个)
回答1:

7.5* 3/4 +0.75*1/2
=7.5*0.75+0.75*0.5
=0.75(7.5+0.5)
=0.75*8
=8÷4*3
=6