+0.625=
12-=
1÷0.05=
9.7+0.03=
10÷10%=
3.5×0.2=
12×101=
①×65+0.75×34÷75%
②()×15×9
③
④86.4-(0.53+6.4)-147%
①
②20%x-2.4×3=0.8
③1.2:=x:5