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2019年六年级数学下册1负数生活中的数学新人教版.doc

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11 负数 生活中的数学 小鬼当家一、 生活里的数学1、海拔高度中的正、负数。莲花峰比海平面高 1864米，记作“+1864 米”；吐鲁番盆地比海平面低 155米，记作(-155)米。2、 3、零下 2摄氏度还可以怎样表示？ 2表示什么意思？零下 2摄氏度可以表示:2 摄氏度。 2表示：零下 2摄氏度。2

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