1. Fill in the blanks (23 points, 65438+ 0 points per blank)

1, the number rewritten as "ten thousand" is 95.678 million, and the mantissa after omitting "one hundred million" is about.

2800 square meters = 2.25 hours per hectare = hours and minutes.

It is 25 kilograms heavier than No.4 and 20% lighter than No.4.

3. An Audi car drives from Fuzhou to Xiamen at a speed of180km/h, and the one-hour journey is 45km away from Xiamen. The formula with letters indicates that Fuzhou is * * * kilometers from Xiamen, and how many hours does it take to get to Xiamen by car?

4. The decimal unit of1can add at least one such counting unit to become 3.

5, 5 meters long steel bar, saw into small pieces of the same length, * * * saw for 6 times, each section accounts for the total length, and each section is meters long. If you saw it in two, it would take 2 minutes, and it would take several minutes to saw it in six.

6. Divide a circle into several small sectors evenly and make it into an approximate rectangle. The circumference is increased by 8 cm, and the area of this circle is square cm.

7. One number is 40% yes.

8. A 2-meter-long square wood is cut into two cuboids parallel to the cross section, which has a surface area of 32 square centimeters more than the original. It turns out that the volume of this square wood is cubic decimeter.

9. The number of eight children's rackets at a time is: 4, 20, 8, 25, 6, 20, 28 and 25 respectively. The average of this set of data is, and the median is.

10. Enlarge each side of the rectangle by 3 times. The ratio of the length of the corresponding side of the enlarged rectangle to the length of the original rectangle is that the original rectangle is enlarged in proportion.

1 1. A ship sails from A to B at a speed of 30 kilometers per hour, and then returns the same way. If the average speed of going back and forth is 40 kilometers per hour, it should be sailing 1000 meters per hour when returning.

12, the circumference of an isosceles triangle is 30 cm, and the length of one side is 8 cm, which does not mean that the length of the other side is cm, but it may be.

Second, multiple-choice questions (15, each question 1.5)

1. Xiaoming's father is one year old and Xiaoming is (a-25) years old. X years later, his father is older than Xiaoming.

AxB25CA—25Dx+25

2, a rope cut into two sections, the first section is meters long, the second section accounts for the whole length, then

-A Part One, B Part Two

3. If number A ÷ number B = 1.4, then number A is better than number B. ..

A more 140%B more 40%C less d less 25%.

4. The picture below shows the bracket nailed with wooden strips, which is not easy to deform.

Accelerated business collection and delivery system (adopted by the United States post office)

5. Class A pens have 4 3 yuan coins, Class B pens have 3 4 yuan coins, and the unit price of A and B pens is.

A4︰3B3︰4C4︰4D9︰6

6. Add 6 grams of salt and 14 grams of water to the salt water with a salt content of 30%. At this point, the percentage of salt in the brine is.

A equals 30%, B is less than 30%, and C is more than 30%.

7. Give all five identical gifts to three children, so that each child can get a gift. There are different ways to give gifts.

A3B4C5D6

8. If any three integers are added in pairs, then.

Their total number is unlikely to be equal. Their total number cannot be odd.

There must be two numbers whose sum is odd. There must be two numbers whose sum is even.

9. Li Lei reads a book, and the number of pages read on the first day is more than that on the second day. If the number of pages read the next day is equivalent to the number of pages in the whole book, how many pages did you read on the first day? The correct formula is

a \( 1+)b×( 1+)c \( 1-)d×( 1-)

10, the following components, is proportional.

The number of weeks and the distance between the rollers. BX and y are related quantities. If =Y, then x and y.

C processing parts for 8 hours every day, processing time and total amount of each part. D the length of a rectangle is fixed, and so are its perimeter and width.

Three. Operation questions (6 points, 2 points for each question)

1. Draw the shortest route for Xiao Ming to cross the road safely from point A.

There is a cypress tree on the opposite side of the road, which is called Cypress and Ah.

The connecting line of these points forms an angle of 60 with the roadside. Please use one

The small "X" marks the approximate location of the cypress. (leaving traces of painting)

3. Find out the actual width of the road.

Four, solve the problem (30 points, 5 points for each question)

1, the figure below shows the statistics of the number of computers assembled by a computer company from 2003 to 2007.

Answer the following questions according to the statistical chart:

(1) What is the average annual output from 2003 to 2007? (1.5 points)

(2) What percentage increased in 2007 compared with 2006? (1.5 points)

(3) Please predict how many computers this computer company will assemble in 2008? what do you think? (Write a sentence) (2 points)

2. The engineering team has built an expressway with a length of 1600 meters, and 75% of this expressway has been repaired. How many meters are left to be repaired?

3, a basket of fish sold more than half 1.2 Jin. At this time, there is still 13.2 kg. How many Jin did this basket of fish weigh?

4. Xiao Wang has 239 chickens and ducks, of which the number of ducks is three times that of chickens, which is more than 15. How many chickens and ducks does Xiao Wang have?

5. To make a cylindrical oil drum with iron sheet, it is required that the bottom radius is 3 decimeters and the ratio of height to bottom radius is 3: 1. How many square decimetres of iron sheet does it take to make an oil drum like 10? What is the volume of each oil drum? (excluding connectors)

Xiaoming's living room is paved with floor tiles. If you use small square bricks, you need 150. If large square tiles are used, how many are there? (3 points)