Question

简便运算 5.4乘5分之4加1.25乘3.2减0.6乘125％=?

Answer 1

5.4乘5分之4加1.25乘3.2减0.6乘125％

=5.4*4/5+1.25*3.2-0.6*1.25

=(5+0.4)*0.8+1.25*(3.2-0.6)

=4+0.4*0.8+1.25*2.6

=4+0.32+2.5*1.3

=4.32+3.25

=7.57