Unit 9 10, the new goal of English in the first volume of the first day of junior high school, the simulation test paper of ancient poems, ancient poems and mathematical rational numbers.

Total score 120, time 120 minutes.

Name: Achievements:

1. Fill in the blanks (2 points for each question, ***30 points)

1. () and () are collectively called rational numbers. 2. The absolute value of the reciprocal is ().

3. The number whose absolute value is equal to 25 is (), and the square of () is equal to 16.

4. If A and B are opposites and C and D are reciprocal, then (A+B) 4-3 (CD) 3 = ().

5. There are () points on the number axis that are less than 4 from the origin, indicating integers, that is, ().

6. If A and -3 are antonyms, then a-5 = ().

7. The elevation of Turpan Basin in China is-155 m, and the elevation of Dead Sea Lake near the Mediterranean Sea is -392 m. Turpan basin is higher than Dead Sea Lake ().

8. Fill in the following numbers in the corresponding set (write the serial number):

①3.5② ③0 ④- 1.2⑤ ⑥0.33⑦-6⑧ ⑨2008

Integer set {…}, negative fraction set {…}.

9. There are two points 5 units away from point A on the number axis, and the numbers they represent are -8 and 2, so the number represented by point A is ().

10. If | a | = | b |, the relationship between a and b is ().

1 1. Fill in the blanks with ">"

③0( )-|-2|; ④-|-7|( )-(-6).

12. The time difference between Beijing and new york is-13, (the minus sign indicates that new york time is later than Beijing time at the same time). If it is now 15:00 Beijing time, then new york time is ().

13. If | A-5 |+| B+3 | = 0, then A = _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

14. If | a | = | b |, the relationship between numbers A and B is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

15. Define a new operation with "*": For any rational numbers A and B, a * b = b+ 1, for example, 7 * 4 = 4+ 1 = 17, then 5 * 3 = _ _ _ _. When m=2, m * (m * 2) = _ _ _ _ _ _ _

2. Multiple choice questions (3 points for each question, * * * 39 points)

1. 1 1 Bus, when driving to Zhongshan Park Station, the number of people on board should get off first and then get on. At this time, the number of people getting on and off the plane is compared ().

A, there are more B's getting on the bus, more C's getting off the bus, and as many D's, and they are uncertain.

2. If the water level drops by 5m to -5m, then the water level rises by 3m to ().

A.-2m wide, 8m long-8m wide and 3m long

3. The positions of the corresponding points of rational numbers A and B on the number axis are shown in the figure below, so ()

A.B. C. D。

4. On the number axis, the distance between two points representing the number -5 and the number-14 is: ()

19

5. The correct number in the following statement is ()

(1) 0 is not divisible; (2)0 has no reciprocal;

(3)0 has no opposite number; (4)0 divided by any number that is not equal to 0 is equal to 0.

A.0 B. 1 C.2 D.3

6. Let A be the smallest positive integer, B be the largest negative integer, and C be the number with the smallest absolute value, then ()

A. 1 B.- 1 C.0 D.-2

7. If yes, the symbols of A and B are ().

A.a & gt0，b & gt0 B.a & lt0，b & lt0c . a & gt； 0，b & lt0d . a & lt； 0，b & gt0

8. If the reciprocal of x is 3 and | y | = 5, then the value of x+y is ().

A.-8 B. 2 C.-8 or 2 D.-2 or 8

9. If the refrigerating room temperature of household refrigerator is 4℃ and the freezing room temperature is 22℃ lower than the refrigerating room temperature, the freezing room temperature is ().

A.- 19℃b .-26℃c .-22℃d .- 18℃

10. In the following groups, the inverse number is ().

A.- B.

C.D.

1 1. The following value equal to a+b-c is ().

a . a+(-b)+(-c)b .-(-a)-(b)-(-c)

C.a-(-b)+(-c) D.a-(b-c)

12. If | a | =-a is known, then A is () A. Positive number B. Negative number C. Non-positive number D. Non-negative number.

13. How many of the following statements are correct ()

① The farther away from the origin on the number axis, the greater the number;

(2) Two opposite numbers whose absolute values are equal;

③ The number whose absolute value is equal to itself has only one 0;

④ Some rational numbers cannot be represented on the number axis, and not all points on the number axis represent rational numbers;

⑤ If a number is a natural number, it must be an integer;

6. The absolute value of rational number must be positive;

⑦ If a number is negative, the absolute value of this number is its reciprocal;

⑧+a must be a positive rational number and -a must be a negative rational number.

1。

Four, solve the problem (***2 1 minute)

1. It is known that the positions of rational numbers A, B and C on the number axis are as shown in the figure, and the distances from the points corresponding to numbers B and C to the origin are equal. (6 points)

Simplification: | a |-b |+| c |.

2.(6 points) means the numbers +2.5, 0, -3, 4, -5, and ">" is used in combination with the number axis. Connect them. (7 points)

3. Shareholder Xiao Wang bought a certain share 1 1,000 shares last Friday, and each share was 20 yuan. The following table shows the daily ups and downs of the stock this week. (Note: No trading on Saturday and Sunday) (8 points)

Monday, Tuesday, Wednesday, Thursday and Friday.

Daily fluctuation (RMB) +4 +4.5-1 -2.5 -3

(1) What was the share at the close on Wednesday?

What is the highest price per share this week? What is the lowest price per share?

It is known that Xiao Wang needs to pay a handling fee of 3‰ of the turnover when buying stocks, and a handling fee of 3‰ of the turnover and a transaction tax of 1‰ when selling stocks. If Xiao Wang sells all his shares before Friday's close, what is his profit?

I deleted the third question, so let's do it! There may be no pictures! Hee hee ...)