First, calculation. (***26 points)
1. Write the number directly. (65438+ 0 point for each small question, ***8 points)
6.3÷0. 1= ÷= -(-)=
3.37+6.73= -= (0. 18+0.9)÷9=
8×(2.5+0.25)= 7×÷7×=
2. Calculate the following questions. (Item (1)(2) 3 points, Item (3) 6 points, * * *12 points)
(1) Equation calculation: 36 ÷ [(-) × 3]
(2) Solve the equation: 17.5-5 (x+0.5) = 9x.
(3) Simple calculation:
(87.2+87.2+87.2×2)×25 765×2 13÷27+765×327÷27
3. Solve the following text questions continuously. (3 points for each small question, ***6 points)
What is the product of the sum of (1)2.7 and 4.5 divided by 14.4?
(2) A number is 15 less than 75% of this number. What's this number? (column equation solution)
Fill in the blanks. (2 points for each small question, ***24 points)
4.5.6 minutes = () minutes () seconds 85000ml = () liters = () cubic meters.
5.a and B are 900km apart, and the distance between them is 15 cm on a map. The scale of this map is ().
6. If 9x=8y, then X and Y are directly proportional to ().
7. Three digits plus two decimal places is 7.68. The maximum value of these three decimal places is (), and the minimum value is ().
8. The speed of a car is 60 kilometers per hour in the first two hours and 70 kilometers per hour in the last three hours. The average speed of this car is () kilometers.
9. A number minus 3 can be divisible by 6, plus 3 can be divisible by 5, and the minimum number is ().
10. The perimeter ratio of the graph to (the side length of each small square is 1cm) is (), and the area ratio is ().
1 1. If the cyclic decimal is (), the number after the decimal point is ().
12. A children's educational film was broadcast from February 26th to March 9th, 2008. If 1 episode is broadcast every day from Monday to Thursday, it stops on Friday and broadcasts two episodes on Saturday and Sunday, then this children's educational film has () episodes, which has actually been broadcast for () days.
13. If the height of a cuboid is reduced by 2 cm, it becomes a cube, and the surface area is reduced by 72 cm, then the volume of this cuboid is ().
14. The right ABCD is a parallelogram, and the length of CE is twice that of BE.
F is the midpoint of DC, and the area of triangle ABE is 9 square centimeters, so
The area of the triangular ADF is () square centimeters.
15. The number of boys in the music group 1 is half less than the number of girls, and the number of girls is three times less than that of boys. There are () people in this group.
Third, the judge. (10)
16. The reciprocal of the false score is less than itself. ( )
The product of all prime numbers in 17.20 must be a multiple of 3. ( )
18. The mother is n years older than her daughter, and after 8 years, the mother is (n+8) years older than her daughter. ( )
19. Grade 6 students planted 9 1 plant in spring, among which 9 plants died, and the survival rate was 9 1%. ( )
20. A cylinder and a cone have a height ratio of 3: 10 if their base radius ratio is 2: 3 and their volume ratio is 2: 5. ( )
Fourth, choose. (10)
2 1. Cut the 5m-long rope into 8 sections on average, each section is () of this rope, and each section is () long.
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22. The denominator of has tripled. In order to keep the size of the fraction unchanged, the molecule should be added with ().
A.3 B. 14 C.2 1 D.28
23. The following graphics, belong to the axisymmetric graphics have ().
A.5 B.4 C.3 D.2
24. Just look at one corner of a triangle. Can you tell what triangle it is? ( )
A. Not necessarily
25. A cylinder has the same diameter and height at the bottom, and its side area is the surface area ().
A. BC
Fifth, the application problem. (6 points for each small question, ***30 points)
26. This shop has shipped 7 tons of pears, which is more than three times that of apples. How many tons of pears and apples have been shipped?
27. A road repair team originally planned to complete a road in 20 days. Actually, 45 meters more than originally planned is repaired every day, and the task is completed five days ahead of schedule. How many meters of roads are planned to be built every day? (Answer with proportional knowledge)
28. A batch of parts will be jointly completed by Party A and Party B within 12 days ... After they worked together for a few days, B asked for leave because of something, and at this time, B only completed the general task. A went on doing it, and it took 14 days from the beginning to the completion of the task. Excuse me: How many days did A do it alone?
29. Two people, A and B, came by bike from cities A and B respectively. Four hours later, A traveled 80% of the whole journey, and B-ultrasound passed the midpoint15km. As we all know, A walks 3 kilometers more than B every hour. How many kilometers is it between A and B?
30. In the figure below, the area of the triangle CDE is 140 square centimeter, ABCD is square, and CD∶DE=5∶4. Find the area of trapezoidal ABCE.