7﹣6.38= 0.42÷0.7= 0.62= 37.2×99+37.2=
7.3﹣3= 8÷0.5= 53= 9﹣(2.5+6.5)=
0.8﹣0.35= 1÷0.25= 0.22×0.5= 10﹣4.8﹣3.2=