The final examination paper of mathematics in the first volume of the first day of junior high school "has an answer"

The final examination paper of mathematics in the first volume of the first day of the People's Education Edition "has an answer"

Mathematics is a difficult subject to learn. If you want to lay a good foundation, you must do more test questions. The following is the final examination paper of the first volume of mathematics in People's Education Press, with answers for your reference only ~

People's Education Publishing House, Volume I, Final Examination Paper of Mathematics, Multiple Choice Questions (*** 15 small questions, 2 points for each small question, ***30 points)

1. If going east is marked as, then going west is marked as ().

A.B. C. D。

2.20 10 On New Year's Day, the highest temperature in a city was 2℃ and the lowest temperature was -8℃, so the highest temperature on that day was higher than the lowest temperature ().

A.- 10℃B- 6℃c . 6℃d . 10℃

3. The absolute value of-6 is equal to ()

A.B. C. D。

In the next three years, the state will invest 850 billion yuan to help the masses? Difficult and expensive to see a doctor? problem 850 billion yuan is expressed as () by scientific notation.

A.1 billion yuan

5. When the value of algebraic expression is ()

A.B. C. D。

6. The following calculation is correct ()

A.B.

C.D.

7. Extend the line segment AB to C, and then extend the line segment AB to D in reverse, so there is a line segment () in the figure.

A.8 Article B.7 Article C.6 Article D.5

8. The following statement is true ()

A. Of all the straight lines connecting two points, the straight line is the shortest.

B. line segment a is the distance between point a and point B.

C. When three straight lines intersect, there must be three intersections.

D in the same plane, two non-overlapping straight lines will intersect if they are not parallel.

9. Known line segments and points, if, then ()

A. this point is the midpoint B. This point is on the line segment.

C. the point is outside the line segment d. Point on the extension line of the line segment.

10. A polynomial MINUS equals, then this polynomial is

A.B.

C.D.

1 1. If, the following formula is wrong.

A.B.

C.D.

12. As shown in the figure, which of the following inequality groups is represented on the number axis?

A.B.

C.D.

13. As shown in the figure, it is known that straight lines AB and CD intersect at points O and OE and are equally divided. Ka, if? EOB=55

A.35 B.55

C.70 D. 1 10

14. The equation that turns the denominator of the equation into an integer is ()

Fill in the blanks (* * 10 small questions, 2 points for each small question, ***20 points)

16. Contrast size: _ _ _ _ _ (fill in? & lt？、? =? Or? & gt？ )

17. Calculation: _ _ _ _ _ _

18. If A and 5 are reciprocal, then a = _ _ _ _ _ _ _ _

19. the difference between a number and b number can be expressed as _ _ _ _ _ _ _ _ _

20. If the definition is indeed =, then (1 indeed 2) is indeed 3 = _ _ _ _ _ _

2 1. As shown in the figure, in order to make the output value y greater than 100, the minimum positive integer x entered is _ _ _ _ _ _ _ _ _ _.

22. As shown in the figure, stack a pair of triangular plates together so that the right-angle vertices coincide at 0 o'clock, then? AOC+？ DOB = _ _ _ _ _ _ _ _ _ _ _ _ _ _

Degree.

23. As shown in the figure, what is OD in AOB? BOC's bisector, OE? AOC bisector, if? AOB= 140, then? EOD = _ _ _ _ _ _ _ _ degrees.

24. If known, then _ _ _ _ _ _.

25. Observe the following monomial list:,? According to the law you found, the seventh monomial is _ _ _ _ _ _ _ _ _ _; The first monomial is _ _ _ _ _ _.

Three. Calculation or simplification (***4 small questions, 4 points for each small question, *** 16 points)

26. Calculation:

27. Calculation:

28. Calculation:

29. simplify:

Fourth, solve equations or inequalities (***2 small questions, 5 points for each small question. *** 10 integral)

30. Solve the equation:

Five, column equation to solve application problems (***2 small questions, 8 points for each small question, *** 16 points)

32. Zhang Xin and Li Ming meet to buy books in the book mall. Please find out the original price of the book that Li Ming bought last time according to their conversation.

33. The length of the thick candle is the same as that of the thin candle. Thick candles can be lit for 5 hours, and thin candles can be lit for 4 hours. If these two candles are lit at the same time, after a period of time, the remaining thick candle is twice as long as the thin candle. How long have these two candles been lit?

Seven, choose to do the problem (this big question ***2 small questions, 35th question 2 points, 36th question 3 points, ***5 points, the score is recorded in the total score, but the total score shall not exceed 100 points).

35. It is known that the solution of the equation is, in which the sum is the value of the algebraic expression.

People's education printing plate, the first volume of the first day, the answer to the final examination paper of mathematics 1. Multiple choice questions (*** 15 small questions, 2 points for each small question, 30 points for * * *)

1.A 2。 D 3。 A 4。 B 5。 A six. D 7。 C 8。 D 9。 B 10。 C 1 1。 B 12。 D 13。 C 14。 B 15。 A

Fill in the blanks (* * 10 small questions, 2 points for each small question, ***20 points)

16.& gt 17. 1 18.-5 19.20.-2 2 1.2 1 22. 180 23.70 24. 10

25. 128 x7； (- 1)n+ 1？ 2n？ ordered series of numbers

Three. Calculation or simplification (***4 small questions, 4 points for each small question, *** 16 points)

26. Calculation:

Solution: Original formula =

=- 1+

=.4 points

27. Calculation: (-6.5)+(-2) (-5).

Solution: Original formula =-6.5+(-2)

=-6.5+(- 1)

=-7.5.4 points

28. Calculation: 18? 20? 32? +30? 15? 22? .

Solution: The original formula =48? 35? 54? . ? 4 points

29. Simplification: (5a2+2a- 1)-4(3-8a+2a2).

Solution: The original formula = 5a2+2a-1-12+32a-8a2.

=-3a2+34a- 13。 ? 4 points

Four, solve the equation or inequality (***2 small questions, each small question 5 points, *** 10 points)

30. Solve the equation: 16x-3.5x-6.5x=7.

Solution: 6x=7,

x=？ 5 points

3 1. Solve inequality: >; 5-x and represents the solution set on the number axis.

Solution: x-1>; 15-3x，

4x & gt 16,

X & gt4.3 points

Represent its solution set on the number axis:

? 5 points

Five, column equation to solve application problems (***2 small questions, 8 points for each small question, *** 16 points)

32. Solution: Suppose the original price of the book that Li Ming bought last time was X yuan. According to the meaning of the question, we can get the following equation:

X-(0.8x+20)= 12.5 points.

Solve the equation: x= 160.

The original price of the book that Li Ming bought last time was 160 yuan. Eight points.

33. Solution: Assuming that these two candles have been lit for x hours, the equation is obtained according to the meaning of the question:

.5 points

To solve this equation: x=

These two candles have been lit for hours. 8 points

6. Answer questions (* *1small questions, ***8 points)

34. solution: by the division rule of rational numbers? When two numbers are divided, the sign of the difference is negative? , yes

(1) or (2) 2 points.

Solve the inequality group (1) and get:

Solve the inequality group (2), there is no solution. Six points.