简便计算 (2/1-3/1*75%)/0.25 0.6*五又二分之一-五分之三*4.5

问题描述:

简便计算 (2/1-3/1*75%)/0.25 0.6*五又二分之一-五分之三*4.5

(1/2-1/3*75%)/0.25
= (1/2-1/4)×4
=2-1
=1
0.6*五又二分之一-五分之三*4.5
=0.6*5.5-0.6*4.5
=0.6*(5.5-4.5)
=0.6