18÷0.2=
0.3÷0.4=
4.8÷6=
7.5÷0.5=
0.6÷12=
7.23×0.1=
3.2÷0.32=
6.06÷0.6=
1.98×0.1=
5.6÷0.56=
8.76-7.6=
6.3+5.7÷0.3=
21.21÷7=
0.8×2.5=
0.56÷0.07=
0.7×0.9÷0.7×0.9=
8.4-5.6= 1.25×0.08= ÷8=
4÷0.2= 50×4%= 7× ÷7× =
时=分
3020g=kg
680m2=hm2