Candidates' attention: 1, test time 120 minutes 2, three major questions in the whole volume * * *, total score 120 points.
Fill in the blanks (3 points for each small question, out of 36 points)
1. If the diameter of a circle is d = 10 cm, then its circumference is c = _ _ _ _ _ _ _ cm. (π takes 3. 14).
2. The number axis is a straight line that defines _ _ _ _ _ _ _ _ _ _ _ and _ _ _ _ _ _.
3. If the water level rises 1.2m, and it is recorded as+1.2m, then the water level drops by 0.8m, and it is recorded as _ _ _ _ _ _ _ _ m. 。
4. The number whose absolute value is equal to 3 is _ _ _ _ _ _ _ _.
5. One book is *** 140 pages. Daming read 40% on the first day, and he will start reading from the first page the next day.
6. The following numbers are known: 2,0, 1.25, -3, -0. 1. The negative number is _ _ _ _ _ _ _ _ _ _; Integer is _ _ _ _ _ _ _ _ _ _ _.
7. It is known that every100g of beef contains 20. 1 g of protein. If you want to get 40.2 grams of protein from beef, you need _ _ _ _ _ _ _ grams of beef.
8. Calculation: The distance between two points corresponding to -3 and -8 on the number axis is.
9. If the absolute value of A is equal to -a, then A is _ _ _ _ _ _ _.
10. As shown in the figure, it is an expanded view of a cubic carton, in which four squares are marked with the numbers 1, 2, 3 and -3 respectively. If the two numbers on the opposite side are opposite, _ _ _ _ _ _ _ should be filled in place A.
1 1. Xiaohua kept the 200 yuan lucky money in the bank for one year. She is going to donate all the money to the "Hope Project" after it expires. If the annual interest rate is calculated at 2.25%, Xiaohua can donate RMB _ _ _ _ _ _ _ _ _ _.
12. A bundle of rope is 80% used, leaving 12 meters. The original length of this rope is 100 meter.
Second, multiple-choice questions (3 points for each small question, out of 24 points)
/kloc-the reciprocal of 0/3. -2 is ()
A.2b-2c . d。
The point 14.A represents-1 on the number axis. Move point A 3 units to the right along the number axis to point B, and the number represented by point B is ().
A. 3b. 2c-4d. 2 or -4
15. The correct operation is ().
A.B. -(-5)=-5
C.(-5)-5=0 D. 3-(-2)=5
16. The corresponding points of two numbers A and B on the known number axis are shown in the figure, and the following conclusion is correct ().
A.a & ltab & lt0 c . a+b & lt； 0 D. b-a >0
17. The translated position of the number n in figure (1) is as shown in figure (2) on the grid paper, so the correct translation below is ().
A. First move down 2 squares, then move left 2 squares.
B. Move 1 grid down first, and then move 1 grid left.
C. Move down 1 grid first, and then move 2 grids to the left.
D. Move down 2 squares first, and then move 1 square to the left.
18. The following statement is true ()
The sum of two numbers must be greater than each addend.
B.0 is divided by any number to get 0.
C If the reciprocal of a number is itself, then the number is 1 or-1.
The reciprocal of D. 0 is 0.
19. As shown in the figure, it is a geometry composed of cubes with the same size, and the shape seen from the left is ().
20. The train from Daqing to Beijing stops at the following stations:
Daqing-Harbin-Changchun-Shenyang-Qinhuangdao-Beijing, so the train ticket for this train is ()
A.5 kinds of B. 10 kinds of C. 15 kinds of D.30 kinds.
Three, solve the problem (out of 60 points)
2 1. (5 points in this question) What numbers do points A, B, C, D, E and F on the number axis represent respectively? And arrange them with "
Point A means: _ _ _ _ _ _; Point B means: _ _ _ _ _ _; Point C means: _ _ _ _ _ _;
Point D means: _ _ _ _ _ _; Point E means: _ _ _ _ _ _; Point F means: _ _ _ _ _ _.
22. (5 points for this question) Find the area of the shadow part in the figure below (π is 3. 14).
23. (5 points for each question, ***20 points) Calculation:
①(+22)+(- 14)+(- 16)+8
②3+(- 13)-(-24)+(-5)
③ 1/2 +(- 3/4 + 1/2)- 1/4
④-20+(- 14 ) -(- 17)- 13
24. It is known that A and B are reciprocal, C and D are reciprocal, and the absolute value of X is 1. (5 points)
25. if, find the value of x+y. (5 points)
26. (6 points in this question) The following is a schematic diagram of the relationship between the distance and time for Xiaoguang to go to the bookstore 10 km away from home and then go home:
(1) It took Xiaoguang a minute to go home. (2 points)
(2) Xiaoguang stayed in the bookstore for minutes; (2 points)
(3) How many kilometers does Xiaoguang drive every hour when he comes home from the bookstore? (2 points)
27. (7 points in this question) The following is a composite histogram drawn by Xiao Cong according to the number of boys and girls in four grades of his school.
(1) According to the statistics, the total number of senior one students is _ _ _ _ _ _ _; The total number of students in the school is _ _ _ _ _ _. (2 points)
(2) What percentage are the third-grade students less than the first-grade students? (3 points)
③ What information can you get from the picture? (Write any information) (2 points)
28. (7 points for this question) On the eve of New Year's Day in 2007, two clothing stores in our city respectively launched the following promotion schemes:
A shopping mall: clothes are sold at the current price of 30%.
Mall B: 200 yuan will give away 100 yuan as a "voucher" when the total shopping amount is over, and the part less than 200 yuan will be ignored. If you buy goods in 520 yuan at the current price, you will be given two "vouchers" of 100 yuan (that is, 200 yuan), and the remaining 120 yuan will be ignored. "Vouchers" can replace cash in the next shopping, but they will no longer enjoy vouchers.
(Note: Vouchers cannot be changed; The goods bought by customers are sold in both shopping malls. )
(1) If Xiao Wang only bought a product in 250 yuan at the current price, he should go to a shopping mall in () to buy a cheaper one. He actually spent () yuan. (2 points)
(2) If Xiao Wang first buys a coat in 250 yuan and then buys a pair of pants at the current price of 100 yuan, how much does it actually cost to go to the shopping malls in A and B? (2 points)
(3) If Xiao Wang really wants to buy a coat from 250 yuan, a pair of pants at a price of 100 yuan and a pair of shoes from 300 yuan, please help him choose which shopping mall is cheaper through calculation? (3 points)