Mid-term examination questions of the first volume of seventh grade mathematics education edition
Examination time: 120 minutes; Full score: 100.
The total score of the first, second and third questions
17 18 19 20 2 1 22 23 24 25
score
1. Multiple choice questions *** 10, 2 points for each question and 20 points for each question. Please fill in the correct answers in the table below.
The title is 1 23455 6789 10.
answer
The reciprocal of 1 Yes ▲
A.B. C. D。
2. As shown in the figure, if you cut a cuboid with a plane, the cross-sectional shape will be ▲
3. The degree of polynomial is ▲
A.2 B.3 C.4 D.9
There is a 400-meter plastic track in Datian County Stadium. Xiaoming ran four times along the track, which is the distance that Xiaoming ran.
Scientific notation is expressed as ▲
a . 1.6× 103m b . 16× 102m c . 4× 102d . 1.6× 104m。
5. The following algebraic writing specification is ▲
A.B. C. D。
6. The value in is ▲
A. 16
7. The number of integers whose absolute value is less than 3.5 is ▲
A.3 B.4 C.7 D.8
8. The formula is written in the form of brackets and, and the correct one is ▲
A.B. C. D。
9. The following calculation is correct ▲
A.B. C. D。
10. A geometric body consisting of more than 8 cubes with the same size cannot be seen from the left as shown in the front and above.
From the front, from above.
A.b.c.d map number 10
2. Fill in the blanks with ***6 small questions, with 3 points for each small question, with a full score of 18.
1 1. Comparative size:-3 _ _ _-3.14, and fill in "".
12. The surface development diagram of a cube is as shown in the figure, so that the original cube
The reverse side of ""is marked with _ _ _ _ _ _ _.
13. East and west are two opposite directions. If you walk 5 meters to the east, record it as+5 meters.
Then walk 7 meters west and write: _ _ _ _ _ _ _.
14. If and are similar projects, then _ _ _ _ _ _ _ _ _.
15. If a two-digit number is represented by one digit and ten digits, then the two-digit number is represented by an algebraic expression.
Yes: _ _ _ _ _ _ _ _ _ _ _ _ _ _.
16. Calculate according to the program shown in the figure. If input is started,
The value of is 24, which we found is the first time.
The result of is 12, and the second result is 6.
Please explore the 2065438+05th time and the result is _ _ _ _ _ _ _.
Third, answer big questions ***9 small questions, out of 62 points. The answer should be written in reasoning process or calculus steps.
17. The full score of this little question is 8:
1 2
Solution: Solution:
18. The full score of this little question is 6.
As shown in the figure, point A and point B are on the number axis, point C means -3.5 and point D means +2.
1What numbers do points A and B represent respectively? 2 points
Two points c and d are displayed on the number axis; 2 points
3 A, B, C and D, which number is negative. 2 points?
Solution:
19. This little question is divided into 8 points:
1 2
Solution: Solution:
20. The score of this little question is 6.
A cube is a three-dimensional figure surrounded by six planar figures. Imagine cutting a cube along some of its edges.
The cube is cut into a plane figure, but the plane expansion diagram of the same cube is obtained by different methods.
Not the same; As shown in the figure, please draw at least three different plane development diagrams.
2 1. The full score of this little question is 6.
Simplify first, then evaluate:, where
Solution:
22. The perfect score for this short question is 6.
Calculation:
Solution:
23. The perfect score for this short question is 6.
"Ten? During the Golden Week, the number of tourists in a scenic spot during the 7-day holiday changes as follows.
A positive number means more people than the day before, and a negative number means fewer people than the day before.
Date 1 2 3 4 5 6 7
Digital change
Ten thousand units+1.6+0.8+0.4-0.8+0.4-1.2.
1 If the number of tourists on September 30th is 20,000, then1the number of tourists on October 2nd is 65438+ 1 ten thousand; 1 point
Please judge the number of tourists in the following seven days:
Japan has the largest population and Japan has the smallest population. There is a difference between the maximum number and the minimum number.
Ten thousand people; 3 points
Take the number of tourists on September 30 as 0: 00, and reflect the number of tourists in these seven days through the broken line statistical chart. Please put down the picture.
Complete statistics. 2 points
24. The full score of this short question is 8.
As shown in the figure, quadrilateral ABCD and quadrilateral ECGF are both squares X.
1 Use an algebraic expression containing x to represent the area of triangle BGF; 2 points
2. The area of the shaded part is expressed by an algebraic expression containing x; 4 points
3 When x=4, what is the area of the shadow? 2 points
Solution:
25. The full score of this short question is 8.
It is known that the numbers corresponding to point A and point B on the number axis are -4 and 2 respectively, and point P is the moving point on the number axis, and its corresponding number is X. 。
1 If the distance from point P to point A and point B is equal, write the number corresponding to point P; 2 points
Is there a point P on the number axis, so that the sum of the distances from point P to point A and point B is 10? If it exists, find the value of x;
If it does not exist, please explain the reason; 4 points
3 If point A, point B and point P move to the right at the same time at the origin, their velocities are 2, 1 and 1 respectively.
Length unit/minute. Q: How many minutes later, the distance between point P and point A and point B is equal? Write grades directly, 2 points.
Reference answer
First, multiple choice questions
The title is 1 23455 6789 10.
Answer B B C A D D C B C A
Second, fill in the blanks
1 1.& gt. 12. Days. 13. -7m 14.5。
15. 10b+a. 1。