0.25×4= 9.1÷0.7= 0.56×100= 4.5÷0.9=
3.3×0.4= 6.4÷0.08= 0.81÷0.9 = 5.1÷1.7=
1×0.815= 15÷0.15= 4.2÷1.4= 1÷0.05=