1. The results of the fifth census in China show that the total population of the whole country is1295.33 million.

Omitting the mantissa after the hundred million, the number in "hundred million" is _ _ _ _ _ _ _ _ _ _ _.

2、5∶( )= =25÷( )=( )%=0.625

3. Two pieces of steel are 8 meters and 6 meters long respectively. Cut them into small pieces of equal length, and the longest length of each piece is _ _ _ _ _ _ _ _.

4. The leap year closest to 2004 is _ _ _ _ _ _ _ _ _ _ _ _

5, 6.5 square meters = () square meters () square decimeter hours = () minutes.

6. The circumference of a rectangle is 40 cm, the ratio of length to width is 3: 2, and the area of this rectangle is _ _ _ _ square cm.

7. It takes 8 minutes to weld five iron wires into a straight rod. If 10 wire is welded into a straight rod, it will take _ _ _ minutes.

8. Two cubes with the same size are spliced into a cuboid, and the surface area is reduced by 16 square centimeter, and the surface area of the spliced cuboid is _ _ _ _ _ _ _ square centimeter.

9. Fill in the appropriate numbers in the brackets.

A classroom covers an area of about () square meters, and the height of the school building is about () meters.

Your weight is about () kilograms.

Second, multiple choice questions. (6 points)

1. Among the following scores, the one that cannot be converted into a finite fraction is ().

① ② ③

2. Xiao Ming walked from home to school, the number of steps and the average length of each step ().

① Out of proportion ② In direct proportion ③ In inverse proportion.

3. Use () to estimate 9. 0 125×6。 What is the approximate product of 95 12?

①9×6 ②9×7 ③ 10×7

4. The number A is 5 less than the number B. If the number A is X, then the number B can be expressed as ().

①②X+5③(X+5)

5. Tractors cultivate hectares of arable land every hour, which means ().

(1) How many hectares of land can a tractor plow per hour? (2) How many hours does it take to plow 1 hectare?

(3) What is the score?

6, in the following figure can't use "bottom area x height" to directly calculate the volume is ().

① Cuboid and cube ② Cylinder ③ Cone

Third, calculation. (34 points)

1, write directly. (5 points)

0.8×0.04= 7.8-2.05= 1.79÷2.5÷4=

0.6÷0.4= 8.6+ - =

2. Find the value of unknown x (9 points)

X+X = 9 1.4×3+7X = 56 1.2∶X =

3. Calculate with recursive equation. (Can write a simple calculation process) (12 points)

3.2×0.25- ÷4 15.6- + 14.4-

÷( × + ) 68÷[0.5×(7.5-0.7)]

4. Text questions. (8 points)

How much is (1) 10.8 and (2) 20% more than 8?

Multiplied by 1.25, what is the product? (column composition formula) (column equation solution)

Fourth, measure, draw and calculate. (8 points)

1, the area of the shaded part can be found by only one condition in the left figure.

(1) Please measure the length of this condition on the map and mark it.

(2) Calculate the area of the shadow part.

1. Make a triangle with the same area but different shape as the original triangle in the figure below, and briefly explain the reasons.

Reason _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Fifth, the application problem. (1-5 5 points, No.6 4 points, ***29 points)

1, the construction team paved one road, and four roads were paved in the first month. 08 kilometers, kilometers were paved in the second month, 2.3 kilometers shorter than the total length of the previous two months in the third month, and meters and kilometers were paved in the third month?

2. Donations for the disabled in the fifth grade of primary school in Hong Xin are as follows:

Class level

number of people

Per capita donation (yuan)

V (1)

Fifty two

6.5

Five (2)

50

6.704

(1) Which class donated more? How much more?

(2) What is the average donation per person in the fifth grade?

3. Students of Grade 5 and 6 in a school went to the barren hills to plant trees. Among them, 576 trees were planted in the fifth grade, 25% less than that in the sixth grade. How many trees were planted in the sixth grade?

4. Party A and Party B complete a project within 6 days, and the workload ratio of Party A and Party B is 5: 3. If A does this project alone, how many days will it take?