School: Class: _ _ _ _ _ Name: _ _ _ _ _ _ _

First of all, fill it out carefully and show your skills. (2 points for each small question ***20 points)

1. It is known that the distance from point A on the number axis to the origin is two unit lengths, so the distance from point A on the number axis to the origin is three unit lengths, and the number represented by the point is three.

2. If the solution of equation X+ 1 =- 1 is the same as equation 2x-k=-x, then k=.

3. If ab is reciprocal, then A+2A+…+49A+50A+49B+…+2B+B =

4. The number of integer solutions of inequality group is.

5. If they are similar items, the relationship between m and n is.

6. If the binary linear equations are known to be unsolvable, then x+y= and x-y =

7. If the two sides of two angles are parallel, and one angle is three times smaller than the other, the degrees of the two angles are.

8. Calculation =.

9. In the Olympic torch relay in May this year, many athletes from a certain city participated in the 10 km torch relay. Each male athlete runs1500m, while the female athlete runs 800m. It is known that there are more female athletes than male athletes 1, but there are not male athletes. mankind

10, given that +2=0, then 2=

Second, choose carefully. (3 points for each small question ***30 points)

The title is 1 23455 6789 10.

answer

1, algebraic value ()

A is greater than zero, b is greater than 2 C equals zero, and d is greater than or equal to zero.

2. If one side of a rectangle is 3a+2b and the other side is a-b larger than it, then its circumference is ().

a、 14a+6b B、7a+3b C、 10a+ 10b D、 12a+8b

3. If there is no solution to the inequality group about x, the value range of is ().

a、a>-3 B、a ≤-3 C、a