共30题用时5分钟

0.36×0.2=

68.59×12.23=

0.1×0.01=

0.02×1.7=

3.82×0.3=

1.006×0.3=

0.51×0.6=

0.45×2.5=

0.213×0.26=

2.9×6≈

0.8×100.2≈

0.3×0.3=

1.2×0.8≈

103×5.21≈

1.3×3=

9.2×0.3≈

10.3×0.521≈

3.7×0.2=

30×0.3≈

0.103×5.21≈

105.2×0.2=

0.98×12.1≈

1.03×0.521≈

2.71×0.4=

1.51×2.01≈

1.03×5.21≈

1.9×46.78=

0.97×3.62≈

0.46×12≈

0.31×3≈