3.8*1.4+18.2/0.7简便算法怎么做

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3.8*1.4+18.2/0.7简便算法怎么做
3.8*1.4+18.2/0.7简便算法怎么做

3.8*1.4+18.2/0.7简便算法怎么做
3.8×1.4+18.2/0.7
=3.8×2×0.7+18.2÷0.7
=26.6×2+26
=79.2

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