奥数67x12x24 用简便方法,用简便方法,
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![奥数67x12x24 用简便方法,用简便方法,](/uploads/image/z/1340531-35-1.jpg?t=%E5%A5%A5%E6%95%B067x12x24+%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%2C%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%2C)
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奥数67x12x24 用简便方法,用简便方法,
奥数67x12x24 用简便方法,
用简便方法,
奥数67x12x24 用简便方法,用简便方法,
67x12x24
=(12×5+7)×12×2×12
=10×12×12×12+14×12×12
=12×12×(120+14)
=19296