0.42÷7= 2÷5= 1÷0.2=
8.4÷2.1= 1.26÷0.6= 0.9×100÷1000=
68+32= 10-0.6= 1.25×80= 0.8÷0.04=
2.4÷ = × = 5×8%= ÷ =