Time: 2011-08-0414: 33 Source: Olympiad Network Author: Ranked Name Read: 68497 times
Column attention: 20 13 college entrance examination score line 20 13 college entrance examination composition 20 13 university ranking question and answer network teacher recruitment sunshine tutor abstract: Write the number of the following questions directly first. (***6 points)1.258 = 0.25+0.75 = 45055 = 24.3.
Write the number of the following questions directly first. (***6 points)
1.25×8=
0.25+0.75=
4505÷5= 24.3-8.87-0. 13=
Fill in the blanks. (16)
1, 1, 2, 3 can be used to form a three-digit * * * number, and their sum is ().
2. For the division formula, the quotient is 22, the remainder is 6, and the sum of dividend and divisor is 259. The divisor of this division formula is () and the dividend is ().
3. The least common multiple of numbers A and B is 78, the greatest common divisor is 13, the known number A is 26, and the number B is ().
Xiaoming has 15 story books, three times more than Xiaoying. Xiaoying has a story book.
The quotient of dividing two numbers is 7.83. If the decimal points of dividend and divisor move to the right at the same time, the quotient is ().
6. The two internal terms of proportion are reciprocal. One of its external terms is 0.8 and the other is ().
7. It takes 4 days for Party A to complete the same work alone, and 5 days for Party B. The work efficiency of Party A is ()% of that of Party B. ..
8. The difference between the value of the integer part with decimal and the value of the decimal part is 88. 1 1, and the value of the integer part is exactly 100 times that of the decimal part. This number is ().
Third, choose the serial number of the correct answer and fill in the brackets in the question. (20 points)
1, the circle has () axis of symmetry.
A. 1 Article B.2
C.4. Many articles
3, the meteorological observatory said that the temperature changes in a day, with () is the most appropriate.
A. Statistical table B. Bar chart
C. departmental statistical chart D. broken line statistical chart
There are 23 fifth-grade students in the science and technology group, five times more than those in the calligraphy group. If there are x people in the calligraphy group, the correct equation is ().
A.2( x+5)=23 B.2x+5=23
C.2x=23-5 D.2x-5=23
5. For a steel pipe, the truncated part is 1/4 of the remaining part, and the remaining part is ()% of the original steel pipe length.
A.75 B.400
C.80 D.25
6. Cylinders and cones with equal volume and equal bottom, the height of the cone is 9 meters, and the height of the cylinder is ().
A.9m b. 18m
6 meters long and 3 meters wide.
7. The length, width and height of a cuboid are a meter, b meter and h meter respectively. If the height increases by 3 meters, the volume will increase by () cubic meters.
A.3ab B.3abh
(h+3) D.3bh
8. The prime factor of decomposition 24 is ()
A.24=3×8 B.24=2×3×4
C.24=2×2×2×3 D.24=6×4× 1
9. The number of B is 40% less than that of A, and the ratio of A to B is ().
Answer 2:3
C.3:5 D.5，3
10. After Party A gives its own money13 to Party B, the money of both parties is equal, and the original ratio of money of both parties is ().
Answer 2:3
C.3:5 D.5:3
Four, with recursive equation calculation (12 points)
1042-384÷ 16× 13 4. 1-2.56÷(0. 18+0.62)
3. 14×43+7.2×3 1.4- 150×0.3 14
Fifth, answer questions. (9 points)
1, in the figure below, the rectangle is divided into four small rectangles by two straight lines, and the areas of three of them are 12 square meters, 8 square meters and 20 square meters respectively. Find the area of another rectangle (the shadow in the figure is divided). (5 points)
2. Find the area of the shaded part (unit: meter). (4 points)
Sixth, column answer. (12)
1, 25% of a number is 1.25, 20% of b number is 60, and what percentage is b number?
2,4 plus 75% of a number equals 1 1.5. Find this number.
3, 8 minus 4/9 divided by 1/3 quotient, the difference multiplied by 4/5, what is the product?
Seven, application questions. (***25 points)
1. The cross section of the channel with the length of 1500m is shown in the following figure. How many cubic meters does it take to dig this canal?
2. When a motorcade transports a pile of coal, it transports 1/6 of this pile of coal on the first day, and the next day it transports 30 tons more than the first day. At this time, the tonnage ratio of transportation coal to remaining coal is 7:5. How many tons is this pile of coal?
A local train and an express train leave from Station A and bilibili respectively. The speed ratio of the express train to the local train is 5:4. Before the express train leaves from Mile Mile, the local train leaves from Station A for 27 kilometers. When we met, the distance from the express train to Mile Mile was 32 kilometers longer than that from the ordinary train to Station A.. How many kilometers are the two stations apart?
There are two granaries, and warehouse A is known to have 600 tons of grain. If grain 1/3 is transferred from warehouse A and 75% is transferred from warehouse B, the grain in warehouse A is twice as much as that in warehouse B, which is 150 tons. How many tons of raw grain are there in warehouse B?
5. A cylinder with a bottom radius of 7 meters and a surface area of 1406.72 square centimeters .. How high is this column?
Reference answer:
First of all, answer:
7/ 12 1/8 1 10 0.4 0.75
1 2/3 13/30 90 1 15.3 5
Second, the answer:
1、6 1332 2、 1 1 248 3、39 4 、( 15-a)/3
5、7.83 6、 1.25 7、 125 8、89.89
Third, the answer:
1、D 2、D 3、D 4、B、C 5、C 6、D
7、A 8、C 9、C 10、C
Fourth, the answer:
730 0.9 3 14
Verb (short for verb) answers:
Sixth, the answer:
Seven, the answer:
Key middle school junior high school mathematics examination paper and answer
Time: 2011-08-0414: 33 Source: Olympiad Network Author: Ranked Name Read: 68497 times
Column attention: 20 13 college entrance examination score line 20 13 college entrance examination composition 20 13 university ranking question and answer network teacher recruitment sunshine tutor abstract: Write the number of the following questions directly first. (***6 points)1.258 = 0.25+0.75 = 45055 = 24.3.
Write the number of the following questions directly first. (***6 points)
1.25×8=
0.25+0.75=
4505÷5= 24.3-8.87-0. 13=
Fill in the blanks. (16)
1, 1, 2, 3 can be used to form a three-digit * * * number, and their sum is ().
2. For the division formula, the quotient is 22, the remainder is 6, and the sum of dividend and divisor is 259. The divisor of this division formula is () and the dividend is ().
3. The least common multiple of numbers A and B is 78, the greatest common divisor is 13, the known number A is 26, and the number B is ().
Xiaoming has 15 story books, three times more than Xiaoying. Xiaoying has a story book.
The quotient of dividing two numbers is 7.83. If the decimal points of dividend and divisor move to the right at the same time, the quotient is ().
6. The two internal terms of proportion are reciprocal. One of its external terms is 0.8 and the other is ().
7. It takes 4 days for Party A to complete the same work alone, and 5 days for Party B. The work efficiency of Party A is ()% of that of Party B. ..
8. The difference between the value of the integer part with decimals and the value of the decimal part is 88. 1 1, and the value of the integer part is exactly 100 times that of the decimal part. This number is ().
Third, choose the serial number of the correct answer and fill in the brackets in the question. (20 points)
1, the circle has () axis of symmetry.
A. 1 Article B.2
C.4. Many articles
3, the meteorological observatory said that the temperature changes in a day, with () is the most appropriate.
A. Statistical table B. Bar chart
C. departmental statistical chart D. broken line statistical chart
There are 23 fifth-grade students in the science and technology group, five times more than those in the calligraphy group. If there are x people in the calligraphy group, the correct equation is ().
A.2( x+5)=23 B.2x+5=23
C.2x=23-5 D.2x-5=23
5. For a steel pipe, the truncated part is 1/4 of the remaining part, and the remaining part is ()% of the original steel pipe length.
A.75 B.400
C.80 D.25
6. Cylinders and cones with equal volume and equal bottom, the height of the cone is 9 meters, and the height of the cylinder is ().
A.9m b. 18m
6 meters long and 3 meters wide.
7. The length, width and height of a cuboid are a meter, b meter and h meter respectively. If the height increases by 3 meters, the volume will increase by () cubic meters.
A.3ab B.3abh
(h+3) D.3bh
8. The prime factor of decomposition 24 is ()
A.24=3×8 B.24=2×3×4
C.24=2×2×2×3 D.24=6×4× 1
9. The number of B is 40% less than that of A, and the ratio of A to B is ().
Answer 2:3
C.3:5 D.5，3
10. After Party A gives its own money13 to Party B, the money of both parties is equal, and the original ratio of money of both parties is ().
Answer 2:3
C.3:5 D.5:3
Four, with recursive equation calculation (12 points)
1042-384÷ 16× 13 4. 1-2.56÷(0. 18+0.62)
3. 14×43+7.2×3 1.4- 150×0.3 14
Fifth, answer questions. (9 points)
1, in the figure below, the rectangle is divided into four small rectangles by two straight lines, and the areas of three of them are 12 square meters, 8 square meters and 20 square meters respectively. Find the area of another rectangle (the shadow in the figure is divided). (5 points)
2. Find the area of the shaded part (unit: meter). (4 points)
Sixth, column answer. (12)
1, 25% of a number is 1.25, 20% of b number is 60, and what percentage is b number?
2,4 plus 75% of a number equals 1 1.5. Find this number.
3, 8 minus 4/9 divided by 1/3 quotient, the difference multiplied by 4/5, what is the product?
Seven, application questions. (***25 points)
1. The cross section of the channel with the length of 1500m is shown in the following figure. How many cubic meters does it take to dig this canal?
2. When a motorcade transports a pile of coal, it transports 1/6 of this pile of coal on the first day, and the next day it transports 30 tons more than the first day. At this time, the tonnage ratio of transportation coal to remaining coal is 7:5. How many tons is this pile of coal?
A local train and an express train leave from Station A and bilibili respectively. The speed ratio of the express train to the local train is 5:4. Before the express train leaves from Mile Mile, the local train leaves from Station A for 27 kilometers. When we met, the distance from the express train to Mile Mile was 32 kilometers longer than that from the ordinary train to Station A.. How many kilometers are the two stations apart?
There are two granaries, and warehouse A is known to have 600 tons of grain. If grain 1/3 is transferred from warehouse A and 75% is transferred from warehouse B, the grain in warehouse A is twice as much as that in warehouse B, which is 150 tons. How many tons of raw grain are there in warehouse B?
5. A cylinder with a bottom radius of 7 meters and a surface area of 1406.72 square centimeters .. How high is this column?
Reference answer:
First of all, answer:
7/ 12 1/8 1 10 0.4 0.75
1 2/3 13/30 90 1 15.3 5
Second, the answer:
1、6 1332 2、 1 1 248 3、39 4 、( 15-a)/3
5、7.83 6、 1.25 7、 125 8、89.89
Third, the answer:
1、D 2、D 3、D 4、B、C 5、C 6、D
7、A 8、C 9、C 10、C
Fourth, the answer:
730 0.9 3 14
Verb (short for verb) answers:
Sixth, the answer:
Seven, the answer: