估算下面各题．
4.03×1.98≈ 3.95×0.2≈ 8.1×10.01≈ 16.2÷1.9≈
59.8÷3.1≈ 10.32÷0.21≈ 99.9÷0.5≈ 70.2×3.02≈
相关试题
估算下面各题．
4.03×1.98≈ 3.95×0.2≈ 8.1×10.01≈ 16.2÷1.9≈
59.8÷3.1≈ 10.32÷0.21≈ 99.9÷0.5≈ 70.2×3.02≈
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