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三年级数学思维训练：归一问题，7箱蜜蜂一年可以酿多少千克蜂蜜?
归一问题：3箱蜂蜜一年可以酿225千克蜂蜜，照这样计算，7箱蜜蜂一年可以酿多少千克蜂蜜？几箱蜜蜂一年可以酿375千克蜂蜜？
三年级数学思维训练：36个专题，系统课程，全面提升！172/194
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