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  • 1. (2024七上·良庆月考) 把下列各数分类:

    , 0, , 26.

    1. (1) 整数:{                                                          …};
    2. (2) 非负整数:{                                                          …};
    3. (3) 负数:{                                                          …};
    4. (4) 分数:{                                                          …};
    5. (5) 正有理数:{                                                          …}.

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