0.79+0.79×99=          1÷5+1÷5=          0.89×101﹣0.89=    2﹣0.64﹣0.36=
1.1﹣2.7÷27=           12.4×11﹣12.4=     1.25×3.3×0=       20﹣3.7﹣7.3=
5×0.75÷1.5×0.75=     1﹣0.1×0.1=        6×0.125×8=        1×0.4÷1×0.4=