5.4÷0.995.4 1.56÷0.2515.6÷2.5
2.83÷1.72.83 4.6÷14.6÷0.1
6.4÷8= 2.5÷0.5= 0.48÷0.6= 0.21×3=
0.39÷1.3= 0.9×0.3= 4.39+2.1= 7÷100=
1÷0.25= 0.25×4÷2=