1.82+18.2乘以0.9怎么简便

更新时间2019-12-14 09:14:52

1.82+18.2乘以0.9

=18.2*0.1+18.2*0.9

=18.2*（0.1+0.9）

=18.2*1

=18.2

1.82+18.2*0.9

=1.82+1.82*9

=1.82*（1+9）

=1.82*10

=18.2

1.82+18.2×0.9

=18.2×0.1+18.2×0.9

=18.2×(0.1+0.9)

=18.2

1.82+18.2X0.9

=1.82+1.82X10X0.9

=1.82X(1+9)

=1.82X10

=18.2