解题思路: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).
(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:[22/7],12,180,(-3)2,1,0.62;
(4)负数-1,-3.01,-15,−
2
3,-43,-45%,;
(5)偶数:12,0,180;
(6)奇数:-1,-15,-43,(-3)2,1;
(7)分数:[22/7],-3.01,-[2/3],-45%,0.62;
(8)非负数:[22/7],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:[22/7],12,0,180,(-3)2,1,0.62.
点评:
本题考点: 有理数.
考点点评: 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.