共30题用时5分钟
5.4×10=
8.5×100=
4.2×1000=
3.2×100=
0.13×4=
0.45×0.15=
0.18×0.3=
1.2×0.3=
0.49×0.7=
8.5×1.7=
3.6×0.1=
0.04×25=
9.782×3.2=
53.73-17.49=
8.76+0.351=
42.4+7.6=
7.8-5.6=
1.58+2.42=
0.24×0.3=
7.8×0.5=
3.9+2.7=
0.3×10=
1.25×4=
2.5×4=
0×4.8=
5.7×5.7=
12-3.8=
77×7.7=
1.25×8=
8.1-0.05=