0.5÷0.90.5
0.55×0.90.55
36÷0.013.6×100
7.3÷0.373÷3
0.25×8= 18÷0.06= 6.8+1.02=
8a-5a= 0.81÷27= 0.02×0.5=
a-0.34a= 12.5×8÷12.5×8=