Question

很简单的题目啊~~帮忙下(1)5.6X69.32+138.64X0.05+693.2X0.43(2)362+548X36

Answer 1

(1)5.6X69.32+138.64X0.05+693.2X0.43

=5.6*69.32+69.32*2*0.05+69.32*4.3

=69.32*(5.6+0.1+4.3)

=69.32*10

=693.2

(362+548X361)/(362X548-186 )

=(362+548*361)/[(361+1)*548-186]

=(362+548*361)/[361*548+548-186]

=(362+548*361)/(548*361+362)

=1