72%÷2.4=
15﹣2.98=
3.6÷0.4÷2.5=
125%×0.16×8=
4x+3.6×5=48 65%x﹣40%x=12.5 x:18=
19.2÷1.2﹣1.25×4.6 36.25﹣8.46+3.75﹣11.54
60%××4.5+0.6×5