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  • 1. (2017七上·山西月考) 把下列各数分别填在相应的集合里:

    5, ,0, 3.14, ,2016,1.99,  ( 6),

    ⑴正数集合:{                                                      };

    ⑵负数集合:{                                                      };

    ⑶整数集合;{                                                      };

    ⑷分数集合:{                                                      }.

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