Question

3.2*0.5*(7.2-7.05)+3.25简便计算.大神速进

Answer 1

3.2*0.5*(7.2-7.05)+3.25 简便计算.

=1.6*(0.2-0.05)+3.25

=1.6*0.15+3.25

=1.6*5*0.03+3.25

=8*0.03+3.25

=3.49