把下列各数填入相应的大括号里:-2.5,3.14,-2,+72,227,0.61...
把下列各数填入相应的大括号里:-2.5,3.14,-2,+72,227,0.618,-31,-0.101,-54,9.正数集合:{_____…}整数集合:{_____…}...
把下列各数填入相应的大括号里: -2.5,3.14,-2,+72,227,0.618,-31,-0.101,-54,9. 正数集合:{_____…} 整数集合:{_____…} 负分数集合:{_____…}.
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解:在下列各数:-2.5,3.14,-2,+72,
22
7
,0.618,-31,-0.101,-
5
4
,9中,
正数集合:{3.14,+72,
22
7
,0.618,-
5
4
,9};
整数集合:{-2,+72,-31,-9};
负分数集合:{-2.5,-0.101,-
5
4
}.
故答案为:{3.14,+72,
22
7
,0.618,-
5
4
,9};{-2,+72,-31,-9};{-2.5,-0.101,-
5
4
}.
22
7
,0.618,-31,-0.101,-
5
4
,9中,
正数集合:{3.14,+72,
22
7
,0.618,-
5
4
,9};
整数集合:{-2,+72,-31,-9};
负分数集合:{-2.5,-0.101,-
5
4
}.
故答案为:{3.14,+72,
22
7
,0.618,-
5
4
,9};{-2,+72,-31,-9};{-2.5,-0.101,-
5
4
}.
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