Question

31.5-18.54/1.81.82*(0.13*0.7) 简便计算哦

Answer 1

（1）31.5-18.54/1.8

=31.5-(18+0.54)/1.8

=31.5-18/1.8-0.54/1.8

=31.5-10-0.3

=21.2

(2)1.82/(0.13*0.7)

= 1.82÷0.7÷0.13

=2.6÷0.13

=20