共30题用时5分钟
12-3.8=
8.1-0.05=
7.3÷0.5=
8.53×0.99=
77÷7.7=
16.73÷2.5=
580÷290=
8.6×18+1.4=
(8.6+1.4)×18=
2.8×18=
5.8÷0.29=
0.1×0.2=
4.2÷0.1=
99×0.35=
0.05×0.8=
1.23÷3=
3.5+7.5=
0.36÷12=
0.45÷0.15=
2÷100=
3.6÷0.1=
5.4÷10=
8.5×100=
4.2×1000=
1.2÷0.3=
0.49÷0.7=
8.5÷1.7=
0.04×25=
18×0.3=
9.782÷3.2=