10.8÷91 0.06÷0.360.06×0.36
a÷9.9a(a>0) 7.9×9.980
1.34÷0.25=÷1=
2.8÷0.85○2.8 253.1÷0.1○253.1 ×10
÷=
6.8×2= 4.2×4= 2.1×5= 1.9×0.1= 6×0.5=