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小数乘法(积的近似数)练习题原创

小数乘法(积的近似数)练习题原创

一、保留一位小数

4.5×0.1≈ 2.2×0.8≈ 1.6×0.9≈

0.76×0.4≈0.07×1.25≈7.6×0.01≈

0.32×0.7≈ 2.76×0.07≈ 3.62×0.2≈

0.9×0.8≈0.47×0.8≈ 2.69×0.8≈

0.56×0.9≈0.7×2.3≈0.7×0.88≈

1.88×0.5≈0.77×0.09≈ 1.8×0.06≈

二、保留两位小数

4.56×0.06≈0.05×28.18≈7.56×0.01≈

9.65×0.04≈0.06×0.12≈0.05×0.98≈

7.96×0.03≈7.56×0.07≈0.49×0.02≈

5.7×0.09≈ 5.45×0.3≈0.31×0.06≈

2.14×0.07≈0.49×0.01≈0.09×0.19≈

0.44×0.03≈ 6.02×0.07≈0.08×0.05≈

0.55×0.9≈0.39×0.1≈0.56×0.04≈

0.55×0.7≈

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