The decimal with the tenth length of 2 and the seventh percentile is (), which consists of () 0.0 1.
2. The shaded area in the figure below is rectangular.
3. The simplest integer ratio with a ratio of 0.72 is ().
4. If 5: x = 3y, then x and y are directly proportional to ().
5.50 HKD = () RMB (1 yuan HKD = 1.06 yuan).
2.55 hours = () hours () minutes = () minutes
6. The approximate number of the composite number A is (), the minimum divisor is (), and there are at least () divisors.
7. both a and b are natural numbers, and the factorization factor a = 2× 5× c; B = 3× 5× C. If the least common multiple of A and B is 60, then C= ().
8. The school sports group bought eight soccer balls, one for A and one for B, and one for 25.5 yuan, so 8a+25.5b is ().
9. There is a triangle whose three internal angles are not equal, and the smallest angle is 45. This triangle is a () triangle.
10. The hour hand of the wall clock is 5cm long and the minute hand is 8cm long. From 8: 00 a.m. to 2: 00 p.m., the tip of the minute hand "walked" () cm, and the area that the hour hand "swept" was () cm 2.
1 1. Cuboid, cylinder and cone have the same base area and volume respectively. If the height of a cuboid is 9 cm, the height of a cylinder is () cm and the height of a cone is () cm.
12. Party A produces 14 pieces in two hours, Party B produces 1 piece in one hour, and Party C produces 8 pieces in one hour. Among these three people, the most efficient is ().
Second, the judgment question. Put √ in brackets for the right and × for the wrong. (65438+ 0 points for each question, ***5 points)
1. Two digits times two digits, and the product can only be three digits or four digits ... ()
2. Scores greater than and less than do not exist. ………( )
Xiaohua drew a ray with a length of 10 cm on the paper. …………( )
4. The data that has not been sorted out is called original data. …………( )
5.A and B are two numbers that are not equal to 0. If the number of A and the number of B are equal. Then A > B ... ()
Third, multiple choice questions. Fill in the brackets with the serial number of the correct answer. (2 points for each question, *** 10)
An integer with a length accurate to 10,000 digits is 300,000, and this number may be accurate only by ().
294999(2)309 1 1 1(3)305997(4)295786
2. There are () correct statements in the following statements.
(1) The sum of two odd numbers is odd; (2) The sum of two even numbers is even;
(3) The sum of two prime numbers is a prime number; (4) The sum of two composite numbers is a composite number.
1 2 2 3 3 4
3.40.5×0.56=( )×56
( 1)40.5 (2)4.05 (3)0.405 (4)0.0405
4. A rope is cut into two sections, the first section is meters long, and the second section occupies the whole length, so ().
(1) The first paragraph (2) and the second paragraph (3) have the same length (4) and cannot be determined.
5. The side length of a square is equal to the radius of a circle. It is known that the area of a square is 20 square meters and the area of a circle is () square meters.
(1) cannot answer (2) 62.8 (3)12.56 (4)15.7.
Fourth, answer the following questions. (***35 points)
L, write numbers directly. (5 points)
24×896÷64= 15.4-(5.4-4.5)=
16×( 1000+ )= ×5÷ ×5=
2- + - + - =
2. Find the unknown X. (5 points)
2x- 1.65+2.35=7
3. calculation. (Simple calculation) 15 points
( )×7×5
(9+92+93)×0.0 1 13.5×[ 1.5×( 1.07+ 1.93)]
(333+667)÷[63×( )]
4. Find the area of the shaded part. (Unit, cm) (3 points)
5. There is a cuboid, as shown on the right. (unit: cm) Now cut it into three identical cuboids. (3 points)
(1)*** There are () kinds of incisions.
(2) How to cut into three cuboids?
The sum of the surface areas of cuboids is the largest increase compared with the original cuboids. What is the maximum increase in surface area?
6. Statistics on the number of tourists in a tourist city in recent years. (4 points)
(l) The number of tourists in 2000 increased by ()% compared with 1998; Compared with 2000, the number of tourists in 2002 increased by ()%.
According to this trend, you estimate that the number of tourists in 2004 will increase by ()% compared with 2002, reaching () million.
Fifth, the application problem. (30 points)
L, according to the different given conditions, respectively, list the formula, not to calculate.
There are 400 literature books in the library. How many science books are there?
(1) The number of literary books belongs to scientific books.
(2) There are more science books than literature books.
(3) The number ratio of science and technology books to literature books is 5:8.
(4) There are 84 fewer literature books than science books.
(5) Literature books are equal to 60% of science books.
(6) It is exactly 40% of the total number of science and technology books and literature and art books.
2. 120 hectares of wheat field is harvested 3.5 hours before the harvester. At this rate, how many hours will it take to harvest this land? (Answer with proportional knowledge)
3. There are 120 people in the fourth grade of the experimental primary school participating in the open competition, and the winners account for the total number, and the winners are girls. What is the percentage of boys in the total population?
Xiao Ming read a story book. On the first day, he read 13 books. The next day, he read 10 more pages than the first day. At this time, there are still 80 pages left to read. How many pages are there in this book?
5. A cylindrical glass tank with a bottom diameter of 20 cm and a depth of 15 cm. Fill this jar with water and pour it into an empty cube goldfish bowl. It is known that the depth of the goldfish bowl measured from the inside is 30 cm. Q: How many centimeters is the water level in the goldfish bowl? The last number is reserved for the whole centimeter. )
6. The store sells two washing machines at the same time, each of which is 2400 yuan, one of which is 20% higher than the purchase price and the other is 20% lower than the purchase price. Generally speaking, does the store sell these two washing machines to make money or lose money? what do you think?