3.2-2.7= 100×0.78= 0.36÷0.4= = =
÷2= ×120= = (0.24+0.6) ÷6 = 53=
15× = 0.6×0.09= 2.5÷5= 63÷ = =
1÷0.05= 0× = 14÷ = = =