2.56×1.022.56 12.3÷0.9912.3
4.67×0.954.67÷0.95 40.5×140.5÷1
1.2÷0.3= 10.4×0.1= 0.7×0.9= 4×(2.5+0.25)=
0÷0.26= 0.45÷0.9= 0.92÷0.23= 0.57×8×1.25=