The first volume of junior high school mathematics unit 1 training questions (including answers)

This training question (including the answer) about the first unit of the first volume of junior one mathematics is not specially arranged for everyone, I hope it will help everyone!

First, carefully choose an option (30 points)

1.0 is ()

A. positive rational number B. negative rational number C. integer D. negative integer

2. The first sea-crossing bridge in China-Hangzhou Bay Sea-crossing Bridge is 36 kilometers long, of which 36 kilometers belong to ().

A. Count B. Measure C. Label or classify D. None of the above.

3. The following statement is incorrect ()

A.0 is neither correct nor responsible. The absolute value of B.0 is 0.

C. Rational numbers are either integers or fractions. D. 1 is the number with the smallest absolute value.

4. Among the numbers-,0, 4.5, |-9 |, -6.79, there are () positive numbers.

A.2 B.3 C.4 D.5

5. The reciprocal of a number is 3, so this number is ().

3rd century BC to 3rd century BC.

6. The following formula is correct ()

A.2 & gt0 & gt-4 & gt； - 1 b .-4 & gt； - 1 & gt； 2>0℃ -4℃<-1< 0 & lt2d . 0- 1 & lt； -4

7. If the reciprocal of a number is a negative integer, then the number is ().

a . 1 b . 1 c . 0d .- 1

8. Move the point representing the number 2 on the number axis by 3 units, and the number represented is ().

A.5b. 1 C.5 or 1 D.5 or-1

9. The smallest integer greater than -2.2 is ()

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

10. The school, home and bookstore are located in an east-west street in turn, with the school home 20 meters west and the bookstore home 0/00 meters east. Zhang Ming started from home, walked 50 meters to the east and 70 meters to the west. At this time, Zhang Ming's position is ().

A. At home B. At school C. At the bookstore D. Not in the above places.

Second, fill in a carefully (this question ***30 points)

1 1. If the rise of15m is marked as+15m, it means-8m.

12. Name a negative and integer number.

13. Calculation: _ _ _ _ _ _ _.

14. Calculate 5.24÷6.55, and the result is expressed as _ _ _ _ _ _; In the decimal system, it is _ _ _ _ _ _ _.

15. An integer whose absolute value is greater than 1 but not greater than 3 is.

16. The smallest positive integer is _ _ _ _ _; The negative integer of is _ _ _ _.

17. Compare the following two numbers (with ""and "=").

( 1) 1 -2; (2) -0.3;

18. If point A represents +3, move A to the left by 7 unit lengths and then to the right by 3 unit lengths, then the number represented by the end point is.

19. The number whose reciprocal is equal to itself is _ _ _ _ _, and the number whose absolute value is equal to itself is _ _ _ _ _ _ _ _ _ _ _.

20. Observe the numbers in the following column and write them on the horizontal line according to the law.

- ; ; - ; ; ; ; ……; The number 20 13 is.

Third, comprehensive answer (there are 5 small questions in this question, ***40 points)

2 1, (8 points) Fill in the serial numbers of the following numbers in the corresponding number set:

11②-③+3.2405⑥-6.5⑥+108 ⑧-4 ⑨-6 Error! The embedded object is invalid. .

(1) positive integer set {…}

(2) Positive Fraction Set {…}

(3) Negative score set {…}

(4) Negative set {…}

22.(8 points) Find the reciprocal of 0 and–2.5, and express these numbers and their reciprocal on the number axis; And arranged in order from largest to smallest.

23 Calculation: (6 points)

( 1) (2)

24.(8 points) Yun Yun's father drove from A, with A as the origin and the east as the positive direction. He first drove 15km east, then 25km west, 20km east and 40km west, and asked where the car finally stopped. It is known that this kind of car consumes 8.9 liters of fuel when driving 100 km. How many liters of gasoline did this car consume this time?

25.( 10) In order to participate in the 20 12 Olympic Games, a sporting goods company received a batch of basketball business for production and competition through public bidding, and strictly supervised the quality of basketball for competition, with an error of 5g meeting the requirements. Now the quality inspector takes 6 basketballs for inspection, and the inspection results are as follows: unit: g.

① ② ③ ④ ⑤ ⑥

+3 -2 +4 -6 + 1 -3

(1) How many basketballs meet the quality requirements?

(2) Which ball is closest to the standard?

20 12 school year seventh grade first semester math test unit 1.

Reference answer

First, choose carefully:

1 C 2 B 3 D 4 A 5 B

6 C 7 A 8 D 9 A 10 B

Second, fill in carefully:

1 1.

12. No answer;