5.5+(13.6-6.8×0.55)÷8.5简便计算

更新时间2018-11-25 21:36:06

5.5+(13.6-6.8×0.55)÷8.5

=5.5+（6.8*2-6.8*0.55）÷8.5

=5.5+6.8*（2-0.55)÷8.5

=5.5+6.8*1.45÷8.5

=5.5+1.45*（6.8÷8.5）

=5.5+1.45*0.8

=5.5+1.16

=6.66

5.5+（13.6-6.8x0.55）÷8.5

=5.5+6.8x（2-0.55）÷8.5

=5.5+4x1.45÷5

=5.5+0.8x1.45

=5.5+1.16

=6.66

原式=5.5+13.6÷8.5-6.8×0.55÷8.5

      =5.5×（1-0.68÷8.5）+13.6÷8.5

      =5.5×（1-0.08）+1.6

      =5.5×0.02+1.6

      =0.11+1.6

      =1.76