简便计算 (8/9)*37.5%+(3/8)*(8/9) 七又四分之三*30%+5.25*0.3 53*(2/5)+26*40%+22*0.4-4/10

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 09:52:22
简便计算 (8/9)*37.5%+(3/8)*(8/9) 七又四分之三*30%+5.25*0.3 53*(2/5)+26*40%+22*0.4-4/10

简便计算 (8/9)*37.5%+(3/8)*(8/9) 七又四分之三*30%+5.25*0.3 53*(2/5)+26*40%+22*0.4-4/10
简便计算 (8/9)*37.5%+(3/8)*(8/9) 七又四分之三*30%+5.25*0.3 53*(2/5)+26*40%+22*0.4-4/10

简便计算 (8/9)*37.5%+(3/8)*(8/9) 七又四分之三*30%+5.25*0.3 53*(2/5)+26*40%+22*0.4-4/10
=1/3+1/3=2/3
=0.3*(7.75+5.25)=3.9
=0.4*(53+26+22-1)=40