口算2.4÷0.8=5.4÷10= 0.45÷0.15= 3.6÷0.1= 3.2÷100= 8.5÷ 1.7= 1.2÷0.3 = 0.49÷0.7=0.096÷0.03= 84÷4.2= 0÷0.25= 1÷0.01= 7.2÷0.9=9.3÷0.3= 4÷0.4=0.45÷0.5=0.2÷0.01= 算式1.4÷0.5= 2) 1.55÷0.5=...