0.5÷0.90.5
0.55×0.90.55
36÷0.013.6×100
7.3÷0.373÷3.
10÷0.01=
0.22+0.8=
10﹣2.05=
3.5×0.4=
4÷0.25=
0÷19.8=
0.2×0.05=
0.6×1.5=
1.36+2.87+3.64=
1.8×0.4×0.25=
①4.65﹣2.55﹣1.45
②6.4÷(0.3×2+0.2)
③6.5×99
④2.2×0.25+2.8×0.25.