课时一有理数诊断练习 一、填空 1.规定盈利为正,那么盈利1000元记作__,亏损500元记作__. 2.先将下列有理数表示在数轴上,然后把它们用“<”号连接起来. +2,0,-3,-1/3,-1 1/2,-2.5,4.上述有理数中: (1)正整数有; (2)负整数有; (3)正分数有; A rational number of diagnostic exercises during class hours, fill in the blank 1. The provisions of profit is positive, then the profit of 1000 yuan is recorded as __, the loss of 500 yuan is recorded as __. 2. First the following rational numbers are expressed on the number of axes, and then use them with “<” Numbers are connected. +2,0,-3,-1/3,-1 1/2,-2.5,4. Of the above rational numbers: (1) positive integers are; (2) negative integers are; (3) positive Scores are;