Question

12.5乘0.56+1.4除于5分之2+7.5乘15+17乘2.5=?

Answer 1

12.5*0.56+1.4/(5/2)+7.5*15+17*2.5

=2.5*5*0.56+2.5*1.4+2.5*3*15+2.5*17

=2.5*(5*0.56+1.4+3*15+17)

=2.5*66.2

=165.5

我确定!