2.5×0.4= 1.5×6= 0.72÷9= 2.2×5×0.7=
0.78×0= 0.28÷0.4= 0.3×0.3= 4.8÷0.6÷0.8=
12.6÷3= 0.25÷0.1= 0.64÷0.32= （2.5-1.5）÷0.2=
0.56×0.1=
3.5÷0.5=
0.48÷0.6=
0÷3.47=
6.3×9+6.3=
2.5×0.8=
0.7×0.6=
15÷0.05=
1.1×0.9=
3.7+0.3÷3=
