Ask for 20 10 math test paper from Anxiang primary school to junior high school in Changde city

20 10 junior high school mathematics simulation test paper 1

First, multiple-choice questions (3 points/question)

1, the weather forecast reported the temperature on April 6, 20 10/45℃, so the temperature on April 6, 20 10 was the highest ().

A. 14 C B.9 C

2. There are 25 prime numbers in the first 100 natural numbers, so the number of composite numbers is ().

73-74 A.D.

6.4x+8 is misspelled as 4 (x+8), and the result is better than the original ().

A.4 B. Below 4℃. 24 d more. 24 less

7. After1hour, the angle of the minute hand on the clock face is different from that of the hour hand ().

330 B.300 C. 150 D. 120

8. For a commodity, increase the price by 20% first, and then reduce the price by 20%. Comparison between current price and original price ().

A. improved B. reduced C. unchanged D. uncertainty

Two. Fill in the blanks (3 points/blank)

1. Use the car, horse and cannon in China chess to represent three different natural numbers respectively. If chariots and horses =3, guns and horses =4 and guns and horses =24, then chariots+horses+guns =.

2. Assemble eight square tiles with a side length of 1 into the shape shown in the figure. The circumference of this graph is 14. Now, two other identical tiles are added to the drawing. At least one side of each added tile is the square side in the original picture. 13, 15, 16, 17 and 18. What is the circumference of the new graph?

3. A, B, C, D and E are written on six faces of a cube, and the same letters are written on two opposite faces, as shown in the figure, which shows its three placement diagrams. This letter was written twice.

4. A cuboid is just divided into two identical cubes. If the side length of the segmented cube is 4cm, the surface area and total volume of the segmented cube will increase.

5. A rectangle 5 cm long and 3 cm wide, along the right side.

After the corner line is folded in half, the geometric figure shown on the right is obtained.

The circumference of the shaded part is cm.

6. A job will be completed by Party A alone for 45 days, and then by Party B alone for 18 days. If both parties cooperate, it can be completed in 30 days. Now it takes _ _ _ _ _ days for Party A to do it alone for 20 days, and then Party B does it alone.

7. There are 340 grams of pure alcohol in container A and 400 grams of water in container B. Pour part of pure alcohol in container A into container B for the first time to mix alcohol with water. Pour part of the mixed liquid in container B into container A for the second time. At this time, the pure alcohol content in container A is 70%, and the pure alcohol content in container B is 20%, so the mixed liquid poured from container B into container A for the second time is _ _ _ _ _ _ _ _ _.

8. There are 20 cents, 50 cents and 1 RMB each. Take it out of 2 yuan and have it.

Take a method.

Three, the application problem (49 points)

1. Xiao Ming read a book, and on the first day he read 2/ 15 of the whole book, reading 6 pages more than on the first day. At this time, the ratio of the number of pages read to the remaining pages is 3: 7. How many pages does Xiaoming have to read before he can finish reading this book? (15)

2. The store bought a batch of pens at the price of 10 yuan, and sold them at a fixed price after making a profit of 40%. When they sold these pens, they had already made 240 yuan. How many pens are there in this batch? (15)

3, a city taxi charges are as follows:

Mileage cost

3 km and below 8.00 yuan

More than 3 kilometers, one way, each additional 1 km 1.60 yuan.

More than 3 kilometers, round trip, each additional 1 km 1.20 yuan.

(1), Lili takes a taxi from home to grandma's house, * * * pays by herself 17.6 yuan, how many kilometers is it from Lili's house to grandma's house? (9 points)

(2) Mr. Wang went to the Personnel Bureau 6 kilometers away from school to get a document and went back to school immediately. How can he get a better ride experience? How much do I have to pay for taking a taxi? (10)