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People's Education Edition, Grade Six, Volume One, Mathematics Final Examination Paper Answer Award Score: 30 | Solving Time: 20 10-2-9 18:34 | Questioner: 503304283.
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Mathematics examination paper for the first semester of grade six (90 minutes)
1. Fill in the blanks (one question 1 point, *** 12 point)
1. 10098400 is pronounced as (), and rounded to ten thousand digits is ().
2. When a number is divided by 2, 3 and 7, the result is 1, and the minimum number is ().
3. The product of two prime numbers is even, and one of them must be ().
4.20kg is 20% lighter than (). () m is longer than 5m.
5. Four times the number of A is the number of B, and the ratio of A to B is ().
6. A piece of wire, which is () meters long, is cut and then connected to 4 meters, and the result is longer than the original wire.
7. The average of A and B is 16, and the average of A, B and C is 20, so the number of C can be calculated as ().
8. The price of a commodity is reduced by 10% during the promotion period and increased by 10% after the promotion. At this time, the price of goods is the original price ().
9. Among them, 2.84, 283.3%, 2.8383…, the order from big to small is
.
10.ton = () ton+() kg。
11.A work started in June1was originally scheduled to be completed in one month. In actual construction, the task was completed on June 25th, and ()% was overfulfilled on June 30th.
12. The surface area of a cuboid is 4000 square centimeters. If this cuboid is cut into two equal cubes on average, if two such cubes are put together to form a cuboid, the surface area of this cuboid is at most ().
Second, true or false questions (each question 1 point, ***5 points)
1. Two proportions can form a proportion.
2. The length of the cube is 24cm and the volume is 8cm.
3. Two triangles with equal areas form a parallelogram.
A is longer than B, and B is shorter than A. ..
5. If a>b>0, it must be less than.
Third, the choice (only one is correct, *** 16 points)
1. Circle the following figure with iron wire of the same length, and () has the largest area.
A. triangle b square c rectangle d circle
2. Count, there are () line segments in a * * in the figure.
A.4 B. 6 C. 8 D. 10
3. Given that 4x+6= 14, 2x+2= ()
A. 10 B. 8 C. 6 D. 4
4. A pumpkin weighs about 4000 ()
Cm kg cm cm cm cm cm cm cm cm cm cm cm.
5. Two strands of rope, A cut, B cut rice, and the remaining wire ()
A.A is shorter than B. A and b are equal in length. C. A is longer than b.d. Not sure.
6. Add 6 grams of salt 14 grams of water to the salt water with a salt content of 30%. The salt content of this brine is ()
A. more than 30% B. equal to 30% C. less than 30%
7. If the number of A is equal to three times that of B, then the number of A () is B.
A.& gtB. = C. & lt
8. If the area of the circle is enlarged by 16 times, the circumference will be enlarged ().
A. 16 times B.32 times C.4 times
Three, the calculation problem (***32 points)
1, write grades directly (5 points)
45 + 38 = ÷3 = 4.2÷0.07 = 1 1× = 0.875×24 =
1÷ = 7.2 × = 8- = 0.25 - = ×0÷ =
(The following three questions, of which the eighth question is 6 points)
2、( - 15.3)× ×2.4 3、 1÷( -0.05×70 )×
4、( × + ) ÷( 1 1- )5、 128× - × 128-40÷
6. What is the quotient of the sum divided by the sum of 1.85?
7. 40% of a number is 10 less than 3 times. Find this number.
8. Look at the pictures and fill in the blanks
Xiaohua rides a bike 5 kilometers away from home.
Borrowing books from the library is free of discount.
As can be seen from the line statistics:
Xiaohua stops on the way to the library ()
Points, borrow books in the library with () points.
From home to library, the average speed
Its speed is () kilometers per hour.
What is the speed to go home from the library?
() kilometers per hour.
Iii. Application questions (4 points for each question, including 7 points for the eighth question and 35 points for * * *)
1. Red Star Machine Tool Factory produced 2600 machine tools this year, 400 more than last year. How many machine tools did it produce last year?
2. It takes 10 hour to fill a pool, 12 hour to fill a pool, and 30 hours to drain a pool. How many hours does it take to fill an empty pool with three pipes open at the same time?
3. Bus A travels 75 kilometers per hour from A to B, and it is expected to arrive in 3 hours, traveling 1 hour. The machine broke down and was repaired on the spot for 20 minutes. How many kilometers should I accelerate every hour to arrive on time without delay?
4. The weight ratio of goods in warehouse A and warehouse B is 7:8. If the goods are delivered from warehouse B, and 6 tons are brought from warehouse A, warehouse A is more than warehouse B 14 tons. How many tons are there in warehouse A and warehouse B respectively?
The road construction team plans to complete a road in five days. On the first day, it completed 22% of the whole journey, and the next day, it completed 23% of the whole journey. The distance ratio of the last three days is 4:4:3, and the last day is 27 meters. How long is this road?
6. An alloy contains 3:4 copper and zinc, and 63g of new alloy with copper-zinc ratio of 1:2 is made from this alloy. How many grams of copper or zinc should I add?
7. The diameter of the motor drive wheel for threshing is 0. 16m, and the diameter of the thresher drive wheel is 0.24m If the motor speed is 3600rpm, how many revolutions does the thresher wheel make per minute?
8. A junior high school student held a spring outing. If 45 buses are rented, 15 people have no seats. If you rent the same number of 60 buses, one bus is empty. It is known that 45 buses rent 220 yuan and 60 buses rent 300 yuan.
Q: (1) How many students are there in this school?
(2) What is the most economical way to rent a car?
1, only column types are calculated, not calculated.
① A school donated a batch of 160 tons of raw cement from a construction site to Hope Primary School and used it.
Books, including literary and artistic books, account for 20%. Bring some cement in.
Painting accounts for, and the other 968 volumes are popular science books. At this time, the weight of cement is 75% of the original.
Things. * * * How many books have you donated? How many tons of cement have been shipped?
Line is: Line is:
(3) Class A and Class B in Grade 6, with 44 students in Class A and 50 students in Class B. When taking part in voluntary tree planting, how many students should be transferred from Class B to Class A to make the two classes equal? (Equation solving)
Solution: Suppose.
Equation:
(4) A and B ride bicycles from the same point in opposite directions. A driving speed 14 km, B's speed is A's. So, after two people drive for several hours at the same time, the distance between them is 9 1 km?
The formula is:
Xiao Ming plans to read 6 pages every day and finish it in 20 days. Now his mother wants him to finish reading it eight days in advance. How many pages does Xiao Ming actually read on average every day? (Answer in proportion)
3. A project can be completed by Party A alone 16 days, and by Party B alone 12 days. Now B will do it for three days, and A will do the rest. How many days will it take to complete this project?
The distance between the two places is 450 kilometers, and the bus and the truck are facing each other at the same time. After three hours of meeting, the speed ratio of bus and truck is 7:5. What is the speed of the two cars?
Please design a car rental scheme according to the materials provided below, and explain the reasons.
① Sunshine School has 406 students and 34 teachers.
② The vehicles of Shanshui Travel Agency are: bus: limited to 42 people, and each vehicle costs RMB 1 1,000 per day. Bus: limited to 25 people, each bus goes to 700 yuan every day.
5. Look at the picture and calculate. (4 points)
It is very helpful for me to find the area (unit: cm) of the shaded part in the right picture.
Answer time: 2010-2-818: 31| Let me comment.
Respondents turned to TA: Mu Xue Dance Clothes | Level 1
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Other answers ***2
8 deception
Respondents: enthusiastic users | 2010-1-3120:14
Computational problem
1, write the result directly. 8%
1÷34 = 25 ÷ 10= 6×58 = 1-75%=
32 ÷52 = 17 ×7 12 = 5÷ 1%= 4÷ 13 =
2. Calculating the following questions can be simple and easy. 18%
34 ×2 + 25 ÷2 13 ÷58 + 23 ÷58
1 17 - 87 ×58 + 5 14 7 12 ×35 + 7 12 ×25
( 13 ×67 - 1 14 )÷ 14 15 56 ÷[ 1-(23 - 12 )]
3. Column calculation. 8%
(1) A number is 20 which is more than 80% of 1.5. What's this number?
(2) What is 25% more than 10 by 20%?
4. Find out the area of the shaded part in the picture below. (Unit: cm) 2%
10
II. Fill in the blanks 16%
1, 30 tons of soybean can squeeze out 1 1.4 tons of oil, and the oil yield of soybean is ()
2、( ):5=0.8=20( ) =( )%
3, 100 kg is () kg after 20% increase; () Reduce the tonnage by 25% to 75 tons;
() kg is 30% more than 100 kg; 50 grams is 40% less than () grams.
4. A circle has a radius of 5 meters, a circumference of () meters and an area of () square meters.
5.A number is equivalent to 58 of B number, and B number is ()% more than A number.
6. After a 20% discount, the price of a commodity is 400 yuan. The original price of this commodity is () yuan.
7. 20% of a number is 100, and 35 of this number is ().
8. There are 48 students in Class 6 (1) today, and two of them are on leave due to illness. The attendance rate on this day is ()%.
9. The perimeter of a rectangular piece of land is 120m, in which the width ratio is 13, and the area of this piece of land is () square meters.
10. The radius of the great circle is equivalent to the diameter of the small circle. The sum of the areas of these two circles is 100 square centimeter, and the area of the great circle is () square centimeter.
III. True or False 4%
1, a pile of coal is about 95% tons. ( )
2. The pi of a big circle is larger than that of a small circle. ( )
3. Xiao Wang processed 10 1 piece, and 100 piece was qualified. The qualified rate of these parts is 100%. ( )
4. If A is 25% more than B and B is 20% less than A ... ()
Four, multiple-choice questions (fill in the serial number of the correct answer in brackets) 4%
1. The salt content of a brine is 10%, and the ratio of salt to water is ().
a、 1: 10 B、 1: 1 1 C、 1:9
2. The radius of the circle is enlarged by 2 times, and the area of the circle is enlarged ().
A, twice b, four times c, eight times
3. It takes 65,438+00 hours for the bus to drive from A to B, and 65,438+05 hours for the truck. The speed ratio between the bus and the truck is ().
a、2:3 B、3:2 C、2:5
4, with the same length of wire into a rectangle, square and circle, surrounded by () the largest area.
A, rectangle b, square c, circle
Verb (verb's abbreviation) application problems account for 40%.
1. Last year, a village produced 40 tons of grain every year, an increase of 25% over last year. How many tons of grain will it produce this year?
2. There are 1200 fruit trees in the orchard, of which pear trees account for 40% and peach trees for 20%. How many two kinds of fruit trees are there?
3. The road team has built a road, which has been repaired for 4.5 kilometers, and 55% has not been repaired. How many kilometers is this road?
4. 60% chickens raised by Li are equal to 45% geese. It is known that Uncle Li keeps 120 chickens, so how many geese does Uncle Li keep?
A batch of 540 saplings will be distributed to the fifth and sixth grade students for planting. There are 120 students in grade five and 150 students in grade six. How many saplings should you get in each grade if you allocate according to the number of students?
6. When processing a batch of parts in Li Shifu, the ratio of the number completed on the first day to the total number of parts is 1: 3. If 15 pieces are processed, half of this batch of parts can be completed. How many parts are there in this batch?
7. For a project, it takes 15 days for team A and 15 days for team B to do it alone. Team A will do it for two days first, and the remaining two teams will do it together. How many days will it take to complete this task?
8. Warehouse A stores 100 tons of grain, warehouse B stores 80 tons of grain, and warehouse A transports a batch of grain to warehouse B. At this time, the grain in warehouse B is just 5/4 of that in warehouse A. How many tons of grain did warehouse A transport to warehouse B?
Remarks: I dare not say the answer correctly because I forgot.
Respondent: Yameng Lanmeisifang | Level 1 | 20 10-2-2 15:05.
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