题目内容
将下列各数填入相应的集合中.
,-1,12,0,-3.01,-15,-
,180,-43,(-3)2,-45%,1,0.62.
(1)整数:
(2)自然数:
(3)正数:
,12,180,(-3)2,1,0.62
,12,180,(-3)2,1,0.62;
(4)负数
(5)偶数:
(6)奇数:
(7)分数:
,-3.01,-
,-45%,0.62
,-3.01,-
,-45%,0.62;
(8)非负数:
,12,0,180,(-3)2,1,0.62
,12,0,180,(-3)2,1,0.62;
(9)非负整数:
(10)非负有理数:
,12,0,180,(-3)2,1,0.62
,12,0,180,(-3)2,1,0.62.
22 |
7 |
2 |
3 |
(1)整数:
-1,12,0,-15,180,-43,(-3)2,1
-1,12,0,-15,180,-43,(-3)2,1
,(2)自然数:
12,0,180,(-3)2,1
12,0,180,(-3)2,1
;(3)正数:
22 |
7 |
22 |
7 |
(4)负数
-1,-3.01,-15,-43,-45%,
-1,-3.01,-15,-43,-45%,
;(5)偶数:
12,0,180
12,0,180
;(6)奇数:
-1,-15,-43,(-3)2,1
-1,-15,-43,(-3)2,1
;(7)分数:
22 |
7 |
2 |
3 |
22 |
7 |
2 |
3 |
(8)非负数:
22 |
7 |
22 |
7 |
(9)非负整数:
12,0,180,1
12,0,180,1
;(10)非负有理数:
22 |
7 |
22 |
7 |
分析:根据有理数的分类进行判断即可.有理数包括:整数(正整数、0和负整数)和分数(正分数和负分数).
解答:解:(1)整数:-1,12,0,-15,180,-43,(-3)2,1,
(2)自然数:12,0,180,(-3)2,1;
(3)正数:
,12,180,(-3)2,1,0.62;
(4)负数-1,-3.01,-15,-
,-43,-45%,;
(5)偶数:12,0,180;
(6)奇数:-1,-15,-43,(-3)2,1;
(7)分数:
,-3.01,-
,-45%,0.62;
(8)非负数:
,12,0,180,(-3)2,1,0.62;
(9)非负整数:12,0,180,(-3)2,1;
(10)非负有理数:
,12,0,180,(-3)2,1,0.62.
(2)自然数:12,0,180,(-3)2,1;
(3)正数:
22 |
7 |
(4)负数-1,-3.01,-15,-
2 |
3 |
(5)偶数:12,0,180;
(6)奇数:-1,-15,-43,(-3)2,1;
(7)分数:
22 |
7 |
2 |
3 |
(8)非负数:
22 |
7 |
(9)非负整数:12,0,180,(-3)2,1;
(10)非负有理数:
22 |
7 |
点评:考查了有理数,认真掌握正数、负数、整数、分数、正有理数、负有理数、非负数的定义与特点.注意整数和正数的区别,注意0是整数,但不是正数.
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