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把下列各数分别填入相应的集合里:-3,-23,0,227,-3.14,2015,+2.18,0.070070007…,3π(1)正数集合:{…};(2)负数集合:{…};(3)整

题目详情
把下列各数分别填入相应的集合里:-3,-
2
3
,0,
22
7
,-3.14,2015,+2.18,0.070070007…,3π
(1)正数集合:{                 …};
(2)负数集合:{                 …};
(3)整数集合:{                 …};
(4)无理数集合:{               …}.
▼优质解答
答案和解析
(1)正数集合:{
22
7
,2015,+2.18,0.070070007…,3π};
(2)负数集合:{-3,-
2
3
,-3.14};
(3)整数集合:{-3,0,2015};
(4)无理数集合:{0.070070007…,3π…}.
故答案为:
22
7
,2015,+2.18,0.070070007…,3π;-3,-
2
3
,-3.14;-3,0,2015;0.070070007…,3π.