题目内容
把下列各数分别填入相应的集合里.
-4,-|-
|,0,
,
,2013,-(+5),+1.88,0.010010001…,-2.33….
(1)正数集合:{…};
(2)负数集合:{…};
(3)整数集合:{…};
(4)有理数集合:{…}
(5)无理数集合:{…}.
-4,-|-
4 |
3 |
22 |
7 |
π |
2 |
(1)正数集合:{…};
(2)负数集合:{…};
(3)整数集合:{…};
(4)有理数集合:{…}
(5)无理数集合:{…}.
-|-
|=-
,-(+5)=-5,
(1)正数集合:{
,
,2013,+1.88,0.010010001…,…};
(2)负数集合:{-4,-|-
|,-(+5),-2.33…,…};
(3)整数集合:{-4,0,2013,-(+5),…};
(4)有理数集合:{-4,-|-
|,0,
,2013,-(+5),+1.88,-2.33…,…}
(5)无理数集合:{
,0.010010001…,…}.
4 |
3 |
4 |
3 |
(1)正数集合:{
22 |
7 |
π |
2 |
(2)负数集合:{-4,-|-
4 |
3 |
(3)整数集合:{-4,0,2013,-(+5),…};
(4)有理数集合:{-4,-|-
4 |
3 |
22 |
7 |
(5)无理数集合:{
π |
2 |
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