The reciprocal of the first fill-in-the-blank question 1. The-(-) in the first volume of seventh grade mathematics is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. If |x|+|y|=0, then x = _ _ _ _ _ _ _ _, and y = _ _ _ _ _ _ _ _ _. 3. If |a|=|b|, then A and B _ _ _ _ _ _ _ _ _ 4. Because the number of points with equal distance from point 2 to point 6 is 4, there is such a relationship, then the number with equal distance from point 100 to point 999 is _ _ _ _ _ _ _ _ _ _ _ _; The number represented by a point with the same distance from the point is _ _ _ _ _ _ _ _ _; The number represented by points with equal distance from m to -n is _ _ _ _ _ _ _ _. 5. Calculation: = _ _ _ _ _ _. 6. Known, then = _ _ _ _ _ _. 7. If = 2, then x = .8. The rational number represented by a point 4 units away from point 3 is _ _ _ _ _ _ _ _. 9. The rational number within the range of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 10. A positive integer less than 3 is _ _ _.11. If m 0, | m | > | n|, then m+n _ _ _ _ _ _ 0. 12. Can you work it out quickly? In order to solve this problem, we study the square of a positive integer with a unit number of 5. Any positive integer with a unit number of 5 can be written as 10N+5 (n is a positive integer), that is, the value of sum. Try to analyze these simple cases, 2, 3 ... and explore their laws. ⑴ Explore the law through calculation: it can be written as; Can write; Can write; Can write; ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… ; - ; ; ; ; ……; The number of 2003 is. 14. Fill in the following numbers in the corresponding set. Integer Set: {...} Negative Set: {...} Fraction Set: {...} Non-negative Set: {...} Positive Rational Number Set: {...} Negative Fraction Set: {...} Multiple Choice 15. (1) The following statements are correct: (a) The greater the absolute value, the greater the number; (b) The greater the absolute value, the smaller the number; (c) Two numbers with equal absolute values are equal; (d) The absolute values of two numbers are equal. 16. Known