Tip: 1 to 7 questions are required, with a total score of 100. The eighth question is optional, and the total cumulative score of the whole volume is llO.

1. Fill in the blanks: (17 points, 2 points for the second question, 4 questions, 6 questions, 7 questions and 9 questions, and the rest 1 point)

1, the fifth census, China population1295.38 billion people, write () people, omit hundreds of millions of people, the mantissa is about () people.

2. "Green mountains and clear waters blow green wind, pines stand upright in the blue sky, willow branches are green, and reading is blue." This poem depicts a beautiful picture of a child named Qingqing studying in a beautiful spring. This poem is characterized by a lot of "Qing". Please count it first, and then calculate that the proportion of the number of times the word "Qing" appears in the whole poem is ().

3. The first express train from Beijing to Lhasa started on July 2 1 Sunday and arrived at 20: 58 on July 3, 2006. The whole running time is (). The Beijing-Lhasa railway is 4064 kilometers long, and the highest mountain on the way is 5068 meters. The average speed of this train is about () kilometers per hour (the result is kept to one decimal place).

4. A circular flower bed with a radius of 3m. If the radius increases by 1 m, the flower bed area will increase by about () square meters. (Numbers are reserved as integers)

5. In a proportion, two internal terms are reciprocal, one is 7 and the other is ().

6. The total number of champions of China athletes in Beijing Olympic Games is ().

7. On the scale map, the distance between Lujiang Station and Hefei Station is about 10 cm, and the actual railway length between the two stations is about () kilometers.

8. Only there is no formula: A is 160, B is A, and the average value of A and B is ().

9. My mother put 2000 yuan in the bank for three years at an annual interest rate of 2.70%. At maturity, my mother can get back the principal and after-tax interest of 1 * * () yuan. (Interest tax rate is 20%)

10, the top angle of an isosceles triangle is 80, and the number of its bottom angles is ().

2. True or false: (6 points, 65438+ 0 points for each small question, correctly tick "√" and wrongly tick "×")

A composite number has at least three divisors. ( )

2. The survival rate of planting trees at one time is 90%, which means that 10 trees do not survive. ( )

3.A is a natural number, and the reciprocal of A is. ( )

The diameter of a circle is in direct proportion to its length. ( )

Of course, two triangles with equal area can be combined into a parallelogram. ( )

6. Decimals greater than 0.2 and less than 0.6 have only three digits. ( )

Third, multiple-choice questions: (Write the serial number of the correct answer in brackets) (10 score. 2 points for each small question)

1, Xiaoqing and Xiaoliu do the same work. Xiaoqing 4 hours, small six 3 hours. Xiaoqing and Xiao Liu's work efficiency ratio is ()

A, 4: 3 b, 3:4 C, 4:7 D, uncertain

2. Draw the rectangular box into a parallelogram. The perimeter of this parallelogram and the perimeter of the original rectangle-(), and the area of this parallelogram and the area of the original rectangle-().

A, rectangle is big B, parallelogram is big C, and it is as big as D, so it can't be compared with.

3, said a month's temperature changes in a city, it is best to use ().

A, statistical table b, bar chart c, line chart d and fan chart

4. The figure with only one axis of symmetry in the following figure is ()

A, rectangle b, square c, sector d, circle

5. A bamboo pole weighs about 2 ()

a，m b，cm c，ton d，kg

Four, calculation questions: (32 points)

1, write directly. (8 points, 65438+ 0 point for each small question)

2. Find the unknown X. (9 points, 3 points for each small question)

3. How to calculate simply? (15, 3 points for each small question)

5. Formulating the equation or formula and calculating the number: (6 points, 3 points for each small question)

The difference between 1 and 125 minus a number is 5. What's this number?

2. A number plus its 120% equals 4.4. What's this number?

Sixth, calculation. (10)

1, drawing calculation. (5 points, ①2 points, ②3 points)

Please draw the largest circle in the square on the right

② Measure relevant data and calculate the area of this circle.

Songqing Village plans to build a canal from Yangliuhe to the entrance of the village. If you are asked to be an engineer, please help Song Qingcun budget according to the following requirements. (5 points, ①2 points, ②3 points)

(1) How to build the shortest canal and draw a schematic diagram on the map.

(2) If it costs 30,000 yuan per kilometer for construction and maintenance, how much will * * * cost?

Seven, application questions. (19)

1. nutritionists suggest that children should drink no less than1500ml of water every day. Qingqing should drink 6 full glasses of water with a bottom diameter of 6 cm and a height of 10 cm every day. Does it meet the requirements? (4 points)

The biggest typhoon in 2006 was called "Sang Mei", with a wind speed of 60 meters per second, which was four times faster than the fastest runner. How many meters does the fastest runner run per second? (Equation solving) (4 points)

3. For Project A, A can only complete it in 8 hours alone, and B can only complete the project in 8 hours alone. If Team A cooperates with Team B, how many hours will it take to complete this project? (4 points)

The following is the statistical chart of eight math scores of Xiaoqing and Xiaoliu. Look at the picture and answer the questions. (7 points)

(1)(2 points) Xiaoqing is () for the first time and Sixth is (). The highest score in their grade is () and the lowest score is ().

(2)(2 points) Xiaoqing's fourth grade is ()% higher than the third grade. Grade 4 in Primary Four is ()% lower than grade 3.

(3)(2 points) The average scores of the eight grades are Xiaoqing () and Primary Six ().

(4)( 1) Please evaluate the math learning situation of Xiaoqing and Xiaoliu in short words according to the statistical chart.

Eight, choose to do the problem (10)

1, and the shaded area in the figure is hectares. (3 points)

According to statistics, recycling 5 tons of waste paper can make 4 tons of new paper, which is equivalent to cutting 85 trees less. A paper mill recycled 65,438+0,200 tons of waste paper last year. Please illustrate the benefits of waste paper recycling by calculating the data. (3 points)

3. In order to hold the "June 1st" party, 45 students from Class 6 (1) all took action and the whole class arranged teaching.

Room, students buy goods. Can you ask two questions and answer them according to the above materials? (4 points)

Question 1:? Question 2:?