Question

34.8*6.3+473*0.37+13*5.25怎简便做

Answer 1

34.8*6.3+473*0.37+13*1.25

=34.8*6.3+47.3*3.7+13*1.25

=34.8*6.3+34.8*3.7+12.5*3.7+1.3*12.5

=34.8*(6.3+3.7)+12.5*(3.7+1.3)

=34.8*10+12.5*5

=348+62.5

=410.5