I. Fill in the blanks (***20 points, 65438+ 0 point for each question)
1. At present, the area of desertified land in China has reached1739,700 square kilometers, accounting for about 18. 12% of the national territory.
On the map with the scale of 1∶60000, the distance from Yucai Primary School to Children's Palace is 3cm, and the actual distance should be () km.
3. The degree ratio of the three internal angles of a right triangle is 1: 2: 1. If triangles are classified by edges, they are () triangles.
4. Fill in the appropriate unit name.
The area of the desk is about 30 (), and the load of a van is 2 ().
The volume of automobile fuel tank is about 37 (), and the total length of Hangzhou Bay Bridge is 36 ().
5. The circumference of the cone bottom is 94.2 cm, the height is 25 cm, and the volume is () cubic cm.
6. The ratio of A and B is that if A and B are multiplied by 0.469 at the same time, the simplest integer ratio of A and B is (): ().
7.A number is B number, B number is ()% more than A number, and A number is ()% less than B number.
8. If A: B = 2: 3, B: C = 1: 2 and a+b+c=66, then a= ().
9. On the right, the volume of the small cube accounts for ()% of the volume of the large cube.
10., 0.777, 77.8%, the smallest is ().
1 1. Fold a 24-decimeter-long iron wire into the largest square with an area of () square decimeter. If this wire is folded into the largest cube, its volume is () cubic decimeter.
12. As shown below, if the perimeters of two graphs are equal, then a: c = (): ().
13, put eight red pencils and two blue pencils in a bag, let you touch them once at a time, and then put them back after 20 times. The possibility of finding the blue pencil is ().
Second, the judgment (***5 points, 65438+ 0 points for each question)
1, prime numbers have only two divisors. ()
2. The product of several true fractions is less than the quotient of these true fractions. ()
3. If two related quantities are not directly proportional, they are inversely proportional. ()
4. A commodity price increases by 20%, and the price remains unchanged after a price reduction of 20%.
5. Doctors should record the temperature changes of patients with fever, and choose the broken line statistical chart to represent the most appropriate. ()
Three. Multiple choice questions (***5 points, 65438+ 0 points for each question)
1. 10 thousand days is approximately equivalent to ().
① 7 years ② 17 ③ 27 years ④ 37 years.
2. The scale of a picture is 1: 5000000, and the following figure () is the line segment scale of this picture.
① ②
③
3.59.9954 accurate to one percent is ().
① 59.995 ② 50 ③ 60.0 ④ 60.00
4. According to a×b=c×d, the following can't constitute a proportion ().
① a∶c and D ∶ B2D ∶ A and B ∶ C3B ∶ D and A ∶ C4A ∶ D and c ∶ b.
5. The salt taken out from the A salt warehouse is transported to the B salt warehouse. At this time, the quality of salt stored in the two salt warehouses is equal, and the ratio of salt stored in the first salt warehouse and the second salt warehouse is ().
① 5:3 ② 4:5 ③ 6:5 ④ 5:4
Four, calculation (23 points)
1. Numbers written directly: (***5 points, 0.5 point for each question)
3.6÷0.06= × = - = × = 0. 13+ +0.87=
2. Solve the following equations or proportions: (***6 points, 3 points for each question)
4x-7× 1.3 = 9.9 1∶0.4 = 1.35∶X
3. Calculate the following calculation as simple as possible: (* *12, 3 points for each question)
2.5×0.32× 12.5 × + ×
7.25-3 +3.75-6 ( - )÷
Verb (abbreviation of verb) operation (12 points)
1, the surrounding environment of a cultural palace square is as shown on the right:
(1) There is a commercial street 350 meters east of the Cultural Palace.
Vertical to Renmin Road. Draw a straight table in the picture.
Show this street and mark it: Commercial Street.
(2) The gymnasium is located in the Cultural Palace ().
At 45 meters.
(3) Li Xiaoming walks eastward along Renmin Road from school at a speed of 60m/min.
Three minutes later, he was a meter away from the Cultural Palace.
2. Draw a parallelogram, a triangle and a trapezoid with the same area as the rectangle in the grid diagram below, and then draw the largest circle in the rectangle.
Sixth, solve practical problems. (***35 points)
1, a batch of paper-bound exercise books, each with 32 pages, can be loaded into 15. If it is bound into 24 books, each book will be very even.
How many pages does it have?
On the map with scale, the distance between A and B is measured as 2.5cm.. A plane flies from A to B at 8 a.m. and arrives at 9: 30. How many kilometers does this plane fly per hour on average?
3. Mongolian yurts, also known as "felt bags", are traditional Mongolian dwellings. The yurt on the right consists of a cylinder and a cone.
(1) What is the minimum amount of this yurt? (3 points)
(2) How much space does this yurt occupy at least? (3 points)
The average daily electricity consumption of Li Ming's family is 5 kwh. After switching to energy-saving lamps, the daily electricity consumption is 60% of the original. How many kWh of electricity is saved on average every day? Based on the electricity charge of 0.52 yuan per kilowatt hour, how much money can be saved in June after switching to energy-saving lamps?
Fangfang's father got a bonus of 8,000 yuan, and he plans to distribute it according to the following scheme: 1 10 will pay for Fangfang's tuition, 15% will be used to buy books, and the rest will be purchased with national construction bonds.
(1) How much are the tuition and books?
(2) The term of national construction bonds is three years, and the annual interest rate is 2.89%. How much principal and interest can Fangfang's father get after the expiration? (National construction bonds are exempt from interest tax)
Three, 1, 32, 33, 44, 35, ①
4. 1, 81; ; ; ; ; 60; ; ; ;
2、x =； x=0.36
3、 10; ; 1;
5. 1, (1) omitted (2) north; East; West longitude 300 (3); 20
2. Omission
6. 1, 20 pages 2, 1000 km 3, (1)50.24 m2 (2) 160.768 m3.
4, 2 kWh; 1.04 yuan 52000 yuan; 6520.2 yuan, 6750 kilometers.
okay