①4.35×1.024.35 3.98÷1.23.98 0.98×0.980.98
②40.5÷0.840.5 8.24×18.24 3.9÷0.993.9
4.2÷0.7= 3.6÷18= 1.12÷12=
1.2÷0.6= 9.1×0.13= 0.15×40=