7.2÷2= 8.8÷0.4= 4.9÷7= 0.75×10= 0.4×0.3=
5.1-0.2= 1.5+0.15= 2.73÷10= 6.4÷1.6= 1÷0.125=
2÷0.5= 0.9×7= 0.04+0.6= 1.7+1.85=
3.2-2.9= 2.4÷0.08= 1.07×0.7= 0.36÷0.09=
3.08×2.5= △19.8÷5.5=