1. According to the information of the Ministry of Information Industry, by 2008 1 month, the total number of mobile phone users in China had reached 555,769,000, which was written as (), and the mantissa after "ten thousand" was rounded off.
2, 2. 15 hours = () hours () minutes 5 liters 60 ml = () liters.
6000 square meters = () hectares 2 cubic meters 80 cubic decimeters = () cubic decimeters.
3, A ÷ 5 = B (A and B are not equal to 0), then A and B () are directly proportional.
The ratio of 5,8 to all its divisors is (): () = (): ().
6. Using 500 seeds for germination test, the germination rate was 96.6%, and some () seeds did not germinate.
7. The distance between Party A and Party B 150km is 3cm on a map, and the scale of this map is (); From this map, the distance between B and C is 5 cm, and the actual distance between B and C is () km.
8. Wang Ming deposited the lucky money 800 yuan in the bank for three years at an annual interest rate of 5.40%. After the expiration, he is going to donate the interest to poor areas, and he can donate () yuan.
9. The radius and height of the bottom surface of the cylinder are 3 cm, and its side development diagram is in the shape of (). The circumference of this figure is () cm and the area is () cm 2.
10, if x ÷ y = 5, then x∶y =()∴ (), and y is less than x ()%.
1 1. The ratio of attendance to absenteeism in a class is 24∶ 1, and the attendance rate on this day is ()%.
12, a circular piece of paper with a diameter of 8 cm, cut it into the largest square with a cutting area of () square cm.
Second, the judgment question. Mark "√" in () for the right and "×" for the wrong. (65438+ 0 points for each question, ***5 points)
1 A cube with a side length of 6 cm has the same surface area and volume. ( )
Grandma wants to weave a "Chinese knot" with 0.85m silk rope and 8.3m bright silk rope. She can knit 9 such "Chinese knots". ( )
3. For a commodity, the price is increased by 20% first, and then the price is reduced by 20%. Therefore, the current price is equal to the original price. ( )
4. In the salt water with 3% salt content, the ratio of salt to water is 3∶97. ( )
Third, multiple choice questions. Fill in the number of the correct answer in the brackets. (65438+ 0 points for each question, ***5 points)
1, 20 kg is 20% less than () kg.
①25 ②24 ③ 18
2, a triangle, the length ratio of three sides is 3: 4: 5, this triangle is ().
① equilateral triangle ② isosceles triangle ③ acute triangle
3. Make a cylindrical iron ventilation pipe with a bottom diameter of 2 decimeters and a height of 10 decimeter (excluding the joint), and the iron pipe is at least () square decimeter.
①65.94 ②62.8 ③69.08
4. The new supermarket should draw () in order to count the turnover and quarterly changes.
① Bar chart ② Line chart ③ Fan chart
5. Process the cylinder into the largest cone gyro, and cut off () of the original cylinder volume.
Fourth, the calculation problem. (***36 points)
1, oral calculation. (0.5 points for each question, ***4 points)
39÷ = (0.2 1+0.7)÷7= ( - )×20=
(0.56+0.69)×8= ×3÷ ×3= 1 1.75-( +5)=
7-4÷ = 2- × =
2. Find the unknown X. (2 points for each question, ***4 points)
①6 \-3.5x = 6②∶x = 6
3. Calculation can be simplified. (3 points for each question, *** 18 points)
①56×( + - ) ②8.32× 10 1-8.32
③6.75- +3.25- ④ ÷[ ×( + )]
⑤( - )÷( + ) ⑥( +25%)÷ +0.7
4. Column calculation. (3 points for each question, ***6 points)
What is the quotient of the sum of 24 divided by 4?
(2) Find a number whose 3 times is greater than 30 4. (Equation solution)
5. Calculate its perimeter and area as shown in the figure. (Unit: cm) (**4 points)
Fifth, practical problems. (***2 points)
Use the following line segment as the edge and point A as the vertex.
Draw a parallelogram with a height of 2 cm.
Sixth, solve the problem. (3 points for the first question, 5 points for the other party, ***28 points)
1, and the picture on the right shows that three construction teams, A, B and C, completed it alone.
Please calculate the number of days for a project according to the data in the figure.
Fill in the blanks after calculation.
(1) Team A and Team B cooperate to complete the project in () days.
(2) After B has done it alone for 5 days, it will take C () days to take over.
To finish this project.
(3) Team B and Team C can finish the project within () days.
Xincheng Cement Factory produced 2700 tons of cement in March this year, 450 tons more than planned. What percentage?
3. The school plans to plant 108 flowers and distribute them to the sixth and fifth grades according to the ratio of 5: 4. How many more flowers will be planted in the sixth grade than in the fifth grade?
It costs 600 yuan to lay a classroom with a square brick with a side length of 0.3 meters. How many pieces do you need if you replace it with a square brick with a side length of 0.4 meters? (Use proportional solution)
If you buy a car, you have to increase the price by 7%. If you buy it in cash, you can enjoy a 5% discount. Uncle Wang calculated and found that the installment payment was 7200 yuan more than the cash purchase. Do you know the original price of this car?
6, a conical wheat pile, height 1 m, bottom circumference 18.84 m, if the weight of wheat per cubic meter is 0.75 tons, this pile of wheat
1. According to the information of the Ministry of Information Industry, by 2008 1 month, the total number of mobile phone users in China had reached 555,769,000, which was written as (), and the mantissa after "10,000" was rounded off.
2, 2. 15 hours = () hours () minutes 5 liters 60 ml = () liters.
6000 square meters = () hectares 2 cubic meters 80 cubic decimeters = () cubic decimeters.
3, A ÷ 5 = B (A and B are not equal to 0), then A and B () are directly proportional.
The ratio of 5,8 to all its divisors is (): () = (): ().
6. Using 500 seeds for germination test, the germination rate was 96.6%, and some () seeds did not germinate.