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数学
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6.9÷0.3×15.2简便算怎么算（脱式计算）
人气：292 ℃ 时间：2020-01-30 13:12:52
解答
6.9 / 0.3 X 15.2
= 69 / 3 X 15.2
= 23 X 30.4 / 2
= 699.2 / 2
= 349.6
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