Proposition: Fu Ling, School of Foreign Languages
_ _ _ _ _ _ _ _ Class Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
, fill in the blank (each empty 1 minute, ***20 points):
The square root of 1.5, and the square root of 32 is the cube root of _ _ _ _ _ _-8.
2. Simplification: (1)(2), (3) = _ _ _.
3, as shown in figure 1, figure ① ②.
More than _ _ _ _ _ change graphics, figure
(2) after _ _ _ _ into graphics (3)
Figure ③ _ _ _ _ _ changes to form Figure ④.
4, with two triangles (30 Angle), can spell out _ _ _ _ _ parallelogram.
5. Identification: (1)∽_ (error is less than 1)
6. It is known that in quadrilateral ABCD, AB = CD, and quadrilateral ABCD is a parallelogram, and _ _ _ _ _ _ _ needs to be added. You just need to fill in a suitable form. )
The sum of the external angles of polygons with internal angles is more than 3 times, exceeding 1800.
The number of edges is _ _ _ _ _ _.
8。 The price of a certain kind of rice is 2.4 yuan/kg. When you buy X kg of rice, you need to spend $ Y, which is a function of the relationship between X and Y.
9。 The image of the function y of the straight line l = kx+b,
What about B? = K =
10。 If X = Y =
1 1。 According to the investigation, the parts processed in a workshop every day are as follows: there are two workshops processing 18 copies, each workshop processing 14 copies, each workshop processing10/copy and * * * processing 15 copies. The above data, average data _ _ _ _ _ This set of data is a complex number of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Multiple choice questions (2 points in the test paper, 20 points in * * *):
12。 Figure 4 is a rectangular concrete playground, my school, if students want to.
Go, at least from a corner, corner c ()
140 b . 120 c . 100d . 90m
13, the following statement is true ()
① Infinite decimals are irrational numbers; ② irrational numbers unreasonably restrict decimals;
③ The square root of a number is irrational; ④ -2 is the square root of 4.
A.③B.①②③C.③④D.②④
14, as shown in Figure 5, it is known that point O is the intersection of equilateral triangle ABC, with three highs/>; ⊿AOB, at least a few times with ⊿BOC. ()
A.60 B. 120 C. 240 D. 360
15, and the relationship between points on the number axis is a pair of numbers ().
Natural number B. Link of rational number C. Irrational number D. Real number
16, as shown in Figure 6, in ABCD, e and f are CD, DE, EF and BF at the midpoint of AB, respectively, in the graphic parallelogram ().
A.2 B. 4 C. 6 D. 8
17。 Unit length distance from point m (-3,4) to origin ().
A.3 B. 4 C. 5 D. 7 .
18。 The average of 10 data is 12, 15, the average of 20 data, and then the average of all 30 data ().
A. 12，b . 15 c . 13.5d . 14
Iii. Jane (3 points for each small question, 20 points for * * *):
19。 20。
2 1。 Solving equations by mirror image method;
Answer questions (5 points for each question, ***30 points)
22 people, from AB to EF, translate triangles. How many ways can you give?
23。 As shown in the figure, in □ABCD, AC and BD intersect at point O, AB⊥AC, ∠ DAC = 45, AC = 2 BD.
advertisement
B.C.
24。 It is known that square ABCD and points E and F are the midpoint of AD and BC respectively.
( 1)△ABE?△CDF？ (2) parallelogram service of quadrilateral BFDE?
Automated?External?Defibrillator(AED)
BFC
25。 The symmetry point of the point P 1 is on the X axis, and the time functions P 1 and A( 1, -2).
Find the function expression of time and get the image of such a time function p (-3,5).
26。 In the eighth grade, my school implemented small class teaching, arranged classrooms for 20 students, and lacked three classrooms; Vacant, if there are 24 students in each classroom, the layout of the classroom. Ask the total number of schools and classrooms? Eighth grade, there are always some people?
27。 A beautiful little family recently bought a house. Prepare to decorate the room, wooden floor. Tile the living room. Market research laid the foundation for salary, which is different. The two materials, beautiful small floor, bedroom and living room paving, room expenses (purchasing materials and salary expenses), are budgeted in the list, and X () indicates that the floor paving and paving expenses are Y (yuan), as shown in the figure. The information provided in the figure answers the following questions.
(1) The cost budget for bedroom paving is _ _ _ yuan/square meter, and the cost for living room paving is _ _ _ _ yuan/square meter;
(2) The functional relationship between bedroom laying cost y and dining table cover area ×(M) _ _ _ _ _. Establish the relationship between the living room y (yuan) area × (m) _ _ _ _ _ _.
(3) The budget is small and beautiful. Laying 1M? Tile, pay 5 yuan more than wood floor 1 meter? Buy 1M tiles? 3/4 of the cost of wood flooring. , laying wooden floor per square meter, tile salary $? How much does it cost per square meter to buy wood floors and floor tiles?
living room
answer
1); -2
2)( 1)3(2)5(3)
3) Axisymmetric translational rotation
4)
5)4 or 5
6) "AB plays CD circularly or AD = BC, etc. BR/>； 7) Face 9
8)Y = 2.4 times (X≥0)
9) -
10) 1; - 1
1 1) 14. 1; 14; 14
C 13)D 14)B 15)D
16) 17)C 18)D
19) 1 - 20) BR />2 1)
22)。
23)
a little
25)Y = X-
26)2 1 480
27) 135; 1 10;
That is y = 135x, Y = 1 10X.
Floor manual money: 15 yuan/m2; Handmade tiles: 20 yuan/㎡.
Floor material cost: 120 yuan/m2; Cost of ceramic tile material: 90 yuan/㎡.
The eighth grade semester mathematics final review questions.
Fill in the form carefully
Football Lottery 0502 1 Lottery Results
Lucky draw date -05-23 redemption deadline: 06-20, 2005
Atalanta, Kalichevo, Lazio, Brescia, Palmasan, S&P, Dostuga, Nuremberg, Kaysers, Bilfidot.
0 1 3 1 1 3 1 0 0 0 0 0 3 0
1。 Observe the victory or defeat of China Football Lottery.
Lottery 0502 1 lottery announcement, Freiburg, back.
Answer: BR/> Fruit Lottery Result (number) "1"
The current frequency is "0"
frequency of occurrence
60
Students in a school (5) In the eighth grade English test, 45% of the students said that these students were in the central angle of the fan chart, and the central angle of the fan chart was 120. Good students are
Under the small business, Zhang Sao, a female worker who captured the gang, returned to work and made fast food lunches. The sales volume on the fifth day is as follows: 57 boxes of 50 boxes on the first day, 70 boxes on the next 62 days, and 78 boxes on the first day, the first day, the first day, the first day. When you have lunch, you should be able to clearly reflect the sales of the first five days. You should choose to create a chart.
All four shots were shot by Li Lian, and the two results showed that the first round 10 was finished, which was usually an unstable novice achievement. Then according to the information in the picture, it is estimated that Xiao Zhang and Xiao Li are two novices.
5。 Xiao Ming drew a histogram of rainy season, a rainy week.
(1) The total rainfall this week is about millimeters;
(2) Heavy rain with a daily rainfall of more than 25mm. It rained heavily for several days this week.
6。 100 Two bar charts of the scientific and technological knowledge test taken by students show the results of the two tests distributed and the information provided in the following figure, and answer the following questions (just fill in the answers);
(1) The first time of the two tests scored the lowest; (2) The initial test is relatively easy;
7。 A set of data is divided into four groups. After compilation, the frequencies of the first, second and third groups are 0. 1, 0.3 and 0.4 respectively, and the frequency of the first group is 5, then the fourth group of frequencies is calculated.
In a packet of 20 samples with 8 capacities, the distance and frequency are as follows: 10.
A.0.20 B. 0.25 C. 0.50 D. 0.70
2. Choose carefully.
The following figures are ≤ 70,2. It can be used to indicate the frequency () (a)-0.1(b)1.2 (c) 0.4 (d).
Sector chart Sector accounts for 30% of the wheel, then the central angle of the sector ()
(A) 120 (B) 108 (C)，90 (D)60
3 100
The grouped data is divided into 8 groups, as shown in the following table: the sixth group frequency ()
12(B) 13(C) 14(D) 15
Girls in No.1 middle school account for 50% of the total number of students in the school, and boys in No.2 middle school account for 50%. In the total number of students in the whole school, the number of girls is compared with that of the two schools ()
(a) School B above School A, (b) School and School B(C) School B (D) The school above School is uncertain.
The chart below shows the water consumption and population of an area. The average daily water consumption is 4 million tons, and the mid-year population is about ().
180000 (b) 200000 (c) 300000 (d) 4 million.
A set of known data 63, 65, 67,
The frequency of data between 69, 66, 64, 66, 64, 65 and 68 is 64.5 66.5()(A)0.4(B)0.5(C)(D)4.
7. In the first quarter of 2005, the rapid development of leading industries such as steel, new materials, automobile and other machinery manufacturing, tobacco, food, photoelectric information, petrochemical industry and environmental protection promoted the rapid growth of the national economy. In Wuhan, the pre-production scale was the largest in the first quarter, and the proportion of the six major industries was higher than that of the 10 industry in the same period last year.
The production scale of the known environment in the first quarter is about 27 billion US dollars, 27%, 18%, 10%, 16%, 9% and 6.25% (see figure). According to the statistics of some industries in the first quarter, the total production scale of 10 industry exceeded 40 billion yuan ().
(a) about 43.2 billion yuan, (b) about 4.32 billion dollars, 4
(c) about 3.726 billion yuan, 3(D) about 3.726 billion yuan,
The rest of the department
The time allocation of the chart is a day's time for the gang.
His reading time needs to be increased every day ()
(1) 15 (2) 48 points. (C)60(D) 105 .
Serious A&One
1。 (1), (2) According to the number of male and female students in their school, Li Tongxue draws two histograms of three grades.
(1) Which of these two figures can better reflect the number of students in each grade * * * Which figure can be better?
(2) In the school, it shows that the ratio of the number of students in each grade is
Boys and girls in every grade? In the fan chart of fig. ③.
2。 June 2005 1 1 The final round of the first-class football league ended, as shown in the following table. According to the information you provided, answer the following questions:
(1) Full picture of the bar chart;
(2) 14 which team conceded the least goals in the league and which team lost the most?
(3)20 goals (20) Team proportion (accurate to 1%)?
Rank team names, UPS goals, goals conceded and goal difference points.
Xiamen blue lion1310212681832
2 Changchun Yatai13841361224 28
Guangzhou Rizhiquan 13 7 4 2 22 6 16 25
4 13 6 6 1 20 10 10 24
Shuntian, Jiangsu, 72420/KLOC-0, Babei Greentown, Zhejiang, August 23rd.
6 Hisense Henan Jianye13 6431614 22213
7 13 4 5 4 14 15 - 1 17
Yanbian135172219mar 16
Shanghai Jiucheng133642118 March 15
10 Nanjing, Chengdu sheffield United133642018 February 15.
1 1 13 4 8 20 30 - 10 13
12 Hunan Xiang Army133281025-1511
13 Dalian Long Wave1319 September 30 -2 1
14 Harbin national strength 13 0 13 0 39-39 0
3。 Students A and B are salesmen in a company, selling "Little Swan" washing machines.
The sales from 1 to August are shown in the following table:
Monthly sales
(unit: Taiwan Province) b Sales.
(Unit: Taiwan Province)
1 5th of the month
2 8 6
65
4 7 6
May 7(th)
6 7
July 8(th)
August 9(th)
(1) In the above coordinate system, draw a and b line charts for 8 months. Monthly sales: (dotted line and solid line, b)
(2 )( 1) The line chart shows the sales information of A and B within 8 months. ( 1); ②
4 (the full mark of this question is 10), in order to understand the school's activities of "honoring parents to do housework". Two days before the extraction, students of Grade 50 take 7 days to calculate) investigation week (doing research)
Service time (unit: hours), a set of data, drawn as shown in the following table. please
Cumulative percentage logarithmic frequency of packet frequency
0.55? 1.05 is exactly 14 0.28.
1.05? 1.55 is exactly 15 0.30.
1.55? 2.05 7
2.05 2.55 0.08
2.55? 3.05 0. 10
3.053.55 3.55 4.05 0.04
Total 50 50 1.00
The answers in the table below are as follows:
(2) From the above information, the housework time in a week
The proportion of students shall not exceed 1.5 hours.
(3) Chart reflecting the results
(4) In view of the above situation, I wrote 20 words, more or less advocating the sentence of "respecting parents and loving labor".
Question type:
As shown in the figure, the side CD and point E of quadrilateral ABCD link AE and BE with the following five relationships. :( 1)AD‖BC②in DE = CE； ③∠ 1 =∠2; ④∠3 =∠4, ⑤AD+BC = AB. The relationship between the three groups of problems and the other two groups as conclusions constitutes a proposition.
(1) Write a true proposition with serial number (write: ×××,
Xx), and give proof:
(2) serial number, and then wrote a three-truth proposition (without proof);
(3) Compared with the above four sub-topics: true proposition, think about it, you can.
Write a few real questions, and each additional real question will be given to you 1 point.
Add 2 points.