Name: _ _ _ _ _ Score: _ _ _ _ _ _ _

First, the basic knowledge. (2 points for each question *** 20 points)

1, fill in the blanks:

(1) The diameter of the sun is about1392,000 kilometers, and the number written with "10,000" is () 10,000 kilometers.

(2) 120 square decimeter = () square meter = 3.5 tons = () kg.

⑶ =2:5=( )÷60=( )%

(4) Cut the 5m-long rope into 8 sections on average, each section is the rope length () and each section is () meters.

5] Among 0. 16 and these three numbers, the largest number is () and the smallest number is ().

(6) Magnification of 3.07 times is 3070, and reduction of 38 times is 1000 times is ().

Once the ratio of 0.5: to the simplest integer was (): (), and the ratio was ().

⑻ A number is 1.8, which is more than three times that of A, and is expressed as () by a formula containing letters. When a=2.4, the value of this formula is ().

(9) The distance between Party A and Party B is 26 kilometers, and the distance on the map is 5.2 cm. The scale of this map is ().

⑽ The bottom and height of cylinder and cone are equal, and the volume of cone is smaller than that of cylinder ().

2. Judgment: ("√" in brackets is right and "×" is wrong) (10 score)

(1) A parallelogram has a certain area, and its base is inversely proportional to its height. ( )

⑵ A natural number, if not a prime number, must be a composite number. ( )

⑶ Grade 6 students planted 9 1 plant in spring, among which 9 plants did not survive, and the survival rate was 9 1%. ( )

(4) The rotating speed of the minute hand on the clock is 12 times that of the hour hand. ( )

5] When the side length of a cube is enlarged by 4 times, the surface area is enlarged by 16 times. ( )

3. Choice: (fill in the serial number of the correct answer in brackets) (10)

(1) is the simplest fraction, and a and c must be ().

Prime number b, composite number c, prime number

(2) The following scores can be reduced to finite scores ()

A, B, C,

(3) There were () days in the first half of 2003.

a、 18 1 B、 182 C、 183

(4) Cut out a circle as big as possible with a square piece of paper with a side length of 2 decimeters. The area of this circle is () square decimeter.

a、3. 14 B、 12.56 C、6.28

5] The degree ratio of the three internal angles of a triangle is 2: 3: 4, and this triangle is a () triangle.

A, acute angle b, right angle c, acute angle

Second, calculation.

1, numbers written directly: (4 points)

× 12= 2.5- 1.7= ÷ 3= 3.25×4= - =

0.5×(2.6-2.4)= 2.2+3.57= 0.9×(99+0.9)=

2. Solving equations: (8 points)

x - 1.8=4.6 4 + 0.2x=30

= 8x - 2x=25.2

3. Calculate the following problems, which can be simplified: (12 points)

①3.6-2.8+7.4-7.2 ② ÷23+ × +

③( + )÷ - ④ 18÷[ +( - )]

4. Find the area of the shaded part (unit: cm): (4 points)

5. Column calculation: (6 points)

(1) 27.2 Subtract the sum of 1 1.8 and 13. What is the difference? (2) More than 25% of X, what about X?

Fourth, the application problem: (2 3 points)

1. Zhong Bai supermarket delivered 350kg of cucumbers and tomatoes, of which the weight of cucumbers accounted for all. How many kilograms of cucumbers were shipped?

A barrel of oil is used, and there are still 48kg left. How much did this barrel of oil weigh at first?

3. Team A can finish a project in 8 days and Team B can finish it in 2 days. If the two teams cooperate for a few days first, Team A will finish the remaining tasks in 3 days. How many days did Team A work?

Yong Guang Agricultural Machinery Factory plans to produce 384 small harvesters within 8 days. Due to the improvement of production technology, it actually produced 65,438+06 harvesters per day more than originally planned. How many days does it actually take to complete this task?

5. A project needs four hours of cooperation between master and apprentice. If the apprentice does it alone, it will take six hours to finish it. So, how many projects does the master need to complete in four hours?