Question

2.5*(8-0.4)*12.5简算

Answer 1

2.5*(8-0.4)*12.5

=2.5*12.5*(8-0.4)

=2.5*12.5*8-2.5*12.5*0.4

=2.5*(12.5*8)-(2.5*0.4)*12.5

=2.5*100-1*12.5

=250-12.5

=237.5