Xinhua Bookstore delivered a batch of sci-tech books, and sold 300 books on the first day, accounting for 30% of this batch of books. How many science and technology books are there in this batch?
There are 280 students in Grade Three and Grade Five, of whom 50% are boys. How many boys are there in grade five?
There are 300 students in the fourth and sixth grades, twice as many as in the third grade. There are fewer 10 students. How many students are there in the third grade?
There are 60 boxes of apples in the fruit shop, which is three times as much as oranges, which is 10 more boxes. How many boxes of oranges are there in the fruit shop?
1) The fruit shop imports * * * 390 kilograms of apples, bananas and pears a day. The weight of apples is 1.5 times that of pears, and the weight of bananas is 3/4 of that of pears. How many kilograms of each of the three fruits?
(2) A pot of water used 1/2 and 5 barrels, leaving 30%. How many buckets of water are there in this water tank?
(3) There is a square wood, the fast side is 20 cm long, and it is planed into a cylinder with the largest diameter at the bottom. What is the volume of wood planed out?
(4) The length of a steel pipe is10m. Cut off 7/ 10 for the first time, and cut off the remaining 1/3 for the second time. How many meters are left?
(5) Assemble radios in two groups. Group A assembles 50 radios every day, and completes 10% of the total task on the first day. At this time, Group B began to assemble 40 radios every day. How many days did it take Group A to complete these tasks?
(6) After the highway is built, the total length is 2/3, and the distance is16.5km.. What is the total length of this highway?
(7) The master and the apprentice made a batch of parts together, and the apprentice made 2/7 of the total, 2 1 less than the master. How many parts are there in this batch?
(8) Two teams build a highway. Team A builds 65438+ 0.5 of the total length every day, and Team B works alone for 7.5 days. If the two teams work together for two days, the rest will be repaired by team B alone. How many days will it take?
9) There is a batch of chemical fertilizers in the warehouse, and 2/5 of the total amount is taken out for the first time, and less than 1/3 of the total amount is taken out for the second time. At this time, there are 24 bags left in the warehouse. How many bags are taken out twice?
(10) In the distance of 720m, the front wheel turns 40 times more than the rear wheel. If the circumference of the rear wheel is 2m, find the circumference of the front wheel.
The number of (1 1) A is 1.2 times the average of three numbers. If the sum of B and C is 99, what is the number of A?
(12) There is a project that plans to use 800 workers, and the construction period is 100 days. I didn't expect to stop work due to an accident 35 days after the start of construction, and continue construction 25 days later. How many more workers will be needed if the work is to be completed within the time limit?
(13) The fruit shop bought several kilograms of apples at the price of 1.5 kilograms of 2 yuan money and sold them at the price of 2.5 kilograms of 4 yuan money. If the store wants to make a profit of 100 yuan, how many kilograms of fruit must this fruit shop sell?
(14) The walking speeds of Party A, Party B and Party C are 30m, 40m and 50m per minute respectively. Party A and Party B are in place A, and Party C is in place B. Both parties walk in opposite directions at the same time. After Party C meets Party B, meet Party A in 10 minutes. How many meters are the two places apart?
(15) It takes 15 minutes for Party A to go from the east village to the west village, and 15 minutes for Party B to go from the west village to the east village. Two people set out at the same time and walked towards each other. When they met, the distance was 150 meters, thus finding the distance between the two villages. & lt/P & lt； p & gt
(16) A car runs 2/5 of the whole course on the first day, and the rest on the second day 1/2. The distance on the third day is less than that on the first day 1/3, and the remaining distance is 50 kilometers. How many kilometers is the journey?
(17) The passenger ship sails from Port A to Port B at a speed of 24 kilometers per hour. It took 12 hours for the cargo ship to sail from port B to port A. At the same time, when they met, the ratio of passenger ships to cargo ships was 6: 7, and the distance between the two ports was 6: 7.
(18) The distance between Station A and bilibili is1134km. A bus and a truck leave from two stations at the same time and meet at 10 hour and 30 minutes. The speed of a truck is seven-fifths that of a bus. How many kilometers does this bus travel per hour?
(19) The number of male employees in an assembly workshop is equivalent to 20% of female employees. It is understood that there are female employees 130 in this workshop. How many male employees are less than female employees?
(20) 25 kg of salt water with a salt content of 20%. After adding some water, the salt content is 8%. How much water did you add?
(2 1) There are 307 tons of grain in warehouses A, B and C. After 40 tons are shipped out, the surplus grain weight ratio of warehouse A and warehouse B is 3: 5, and that of warehouse B and warehouse C is 3: 4. How many tons of raw grain is there in warehouse C?
(22) Workshop A and Workshop B need to process a batch of flour, and the planned task ratio of 130% is 8: 5. Workshop B is less than Workshop A 13.5 tons ... How many tons of flour was originally planned to be processed?
(1) There are two baskets of fruit. The fruit in the first basket weighs 32 kilograms. After taking out 20% from the second basket, the weight ratio of the two baskets of fruits is 4:3. How many kilograms were there in the original two baskets of fruit?
(2) It is planned to install 120 TV sets. If you install 8 TV sets every day, you can finish the task one day in advance and four days in advance, then how many TV sets should you install every day?
(3) The distance between Party A and Party B is 1 152km, and a bus and a truck leave both places at the same time. Trucks run 72 kilometers per hour, 2/7 faster than buses. How many hours did it take for two cars to meet?
(4) The school bought a batch of books and distributed them to all classes. If each class is divided into 25 books, there will be 22 more books. If each class is divided into 30 books, there will be 68 books missing. How many classes are there? How many books did you buy?
(5) The fruit company stores a batch of apples, and after selling 30%, it delivers 160 boxes, which is more than the original apples110. How many boxes of apples are there?
(6) The greening team rebuilt the garden in the street center, which used 900 yuan and saved 300 yuan, saving a few percent compared with the original plan.
(7) A road construction team built a road, originally planned to build 200 meters a day, but actually built 50 meters more every day. As a result, the task was completed three days ahead of schedule. What is the total length of this road?
8) There is a cuboid ingot with a circumference of 2m at the bottom and an aspect ratio of 4: 1, which is 25% less. Can be cast into a cone with a height of 3 meters. What is the bottom area of the cone?
(9) For a conductor, 37.5% of the total length is used for the first time, and 27 meters is used for the second time. At this time, the length ratio of used metal wire to useless metal wire is 3:2. How long is this wire?
(10) There are 6 more boys in one class than 5/7 in the whole class, and 4 fewer girls than the whole class 1/4. How many people are there in the class?
(1 1) Warehouse A originally stored 50 tons less grain than Warehouse B. After transferring 30 tons of grain from Warehouse A to Warehouse B, the grain storage in Warehouse A was less than that in Warehouse B.1/4 .. How many tons of grain does Warehouse B store now?
(12) Diesel oil is put into a cylindrical oil drum. It is known that the bottom of the oil drum has a diameter of 6 decimeters and a height of 10 decimeter. When full, the weight of the bucket is 280 kilograms. It is known that a liter of diesel weighs 0.85 kg, so how many kg does the barrel weigh?
(13) A store buys a batch of pens at 10.9 yuan and sells them at 14 yuan. When we sold 4/5 of these pens, we not only recovered all the costs, but also made a profit 150 yuan. How many pens are there in this batch?
(14) When processing a batch of parts, the master can process 54 pieces a day, and if the apprentice processes them alone, it can be completed in 17 days. Now two people are working at the same time. When the task is completed, the ratio of the number of parts processed by master and apprentice is 9:8. How many parts are there in this batch?
(15) Class 6 (1) The original 1/5 students took part in the labor, and then two students took the initiative to participate, so the actual number of participants was 65438+ the rest 0/3. How many people actually took part in the labor?
(16) has *** 100 big balls, 1/3 big balls1/0 small balls 16. How many balls and balls are there respectively?
(17) My mother bought 3kg of bananas and 2kg of pears * * * paid 13 yuan. As we all know, the unit price of pears is 2/3 of that of bananas. How much is a kilo of pears?
(18) The master and the apprentice made a batch of parts together, and the ratio of the parts made by the master and the apprentice was 9:7. Results When the task was completed, the master made 5/8 of the total, 30 more parts than originally planned. How many parts does the master plan to manufacture?
(19) A box of candy * * * has 80 pieces, which are distributed to two brothers. Brother eats his own 1/3, brother eats 10, and then eats 5. The remaining two people are just equal. How much did the two brothers get? & lt/P & lt； p & gt
(20) There are two ropes, and rope A is 35 meters longer than rope B. It is known that 1/9 of rope A is equal to 1/4 of rope B. How long are these two ropes?
(1) The circumference of the bottom of a cylinder is 2/3 of the circumference of the bottom of another cone, and the height of this cone is 2/5 of the height of the cylinder. What is the volume of this cone?
(2) There is a cylinder/glass, which is measured to be 8 cm upright, and the depth of the medicine is 6 cm, which is exactly 4/5 of the contents of the glass. How much medicine can I add to fill the cup?
(3) There are two baskets of apples, and the number of apples in basket A is 365,438+0 less than that in basket B. If seven apples are taken out of basket A and put into basket B, the ratio of apples in basket A to basket B is 4: 7. How many apples are there in basket B now?
(4) Party A, Party B and Party C jointly produce a batch of parts. The parts produced by Party A are 1/2 of the total number of Party B and Party C, and the ratio of the total number of parts produced by Party A and Party C to the number of parts produced by Party B is 7: 2. Party C produces 200 parts. How many parts did Party A produce?
(5) The worker's master takes five minutes to make a part, and his apprentice takes nine minutes to make a part. After a period of time, the master and the apprentice made 84 parts together. How many parts did each of them make?
(6) For a right-angled trapezoid, the ratio of the upper bottom to the lower bottom is 5: 2. If the upper bottom is extended by 2 meters and the lower bottom is extended by 8 meters to become a square, what is the area of the original trapezoid?
(7) The ratio of team A and team B is 7: 8. If 30 people are sent from Team A to Team B, the ratio between Team A and Team B is 2: 3. How many people are there in Team A and Team B?
(8) It takes 20 hours for a truck to transport goods from the county to the mountains. The time to go back is 0.5 times that of 65438+. It is known that it is12km slower than when it comes back, and the round-trip distance can be calculated.
9) If it is completed by two construction teams, a project will take 65,438+02 days to complete. It is known that the efficiency ratio of two construction teams is 2: 3. If this project is completed by team B alone, how many days will it take?
(10) A pile of coal was transported14 for the first time and 120 tons for the second time. At this time, the ratio of the remaining coal to the transported coal is 2/3. How many tons was this pile of coal?
(1 1) At the same time, two cars, A and B, were driving in opposite directions from two places and met six hours later. When they met, car A traveled 72 kilometers more than car B, and the speed ratio of the two cars was known to be 3: 2. Find the distance between the two places.
(12) Give a batch of chemical fertilizers to villages A, B and C, with village A getting14 and the rest to villages B and C. It is known that village C gets 12 tons of chemical fertilizers. How many tons are there in this batch of fertilizer?
(13) Party A and Party B divided a batch of goods according to the ratio of 5: 7. Team B transported 840 tons and completed 4/5 of the team's tasks. Later, due to other tasks, it was transported by team A. How many tons did team A actually transport?
(14) Team A and Team B have ***2 10 people. If110 is transferred from Team B to Team A, the ratio of Team A to Team B is now 4: 3. How many people are there in Team A?
(15) Three workers, Party A, Party B and Party C, made a batch of parts together. Party A processed 2/5 of the total, which was 125 more than Party B, and the proportion of products processed by Party B and Party C was 3: 2. How many parts are there in this batch?
(16) The ratio of freight car speed to passenger car speed is 3: 4, and the two cars are driving relatively from Station A and bilibili at the same time and meet at a distance of 6 kilometers from the midpoint. How far is the truck from bilibili when the bus arrives at Station A?
(17) A batch of pesticides came from Coral Township. The first day used 4/7, which was more than the second day 12kg. At this time, the ratio of pesticide consumption to residual amount is 27: 8. How many kilograms does this batch of pesticides weigh?
1. Application of area calculation of parallelogram, triangle and trapezoid.
1, PLA soldiers reclaimed a parallelogram vegetable field. Its bottom is 24 meters and its height is 16 meters. What is the area of this land?
2. Trapezoidal wheat experimental field with an upper bottom of 86m, a lower bottom134m and a height of 60m. How many square meters is its area? How many hectares?
3. Triangular land with a bottom height of 358m and a height of 160m. What is the area of this land? How many hectares?
1. The People's Liberation Army Transportation Company transports a batch of coal. If each truck is loaded with 4.5 tons, it will take 16 cars to transport it at one time. If each truck is loaded with 6 tons, how many cars will it take to transport it all at once?
2. Students put flowers, each with 9 pots, which requires 36 people; If 18 people want to put it, how many pots should each person put?
3. Taiyanggou Primary School held a math knowledge contest. There are 60 participants in the third grade and 45 participants in the fourth grade. The number of participants in the fifth grade is twice that in the fourth grade. How many people took part in the competition in the third grade?
1, Zhang Ming and Li Hong set out from two places at the same time, facing each other. Zhang Ming walks 50 meters per minute and Li Hong walks 40 meters per minute. 12 minutes later, they met. How many meters are they apart?
2. The distance between Party A and Party B is 255km, and two cars leave both places at the same time. Car A travels 48 kilometers per hour and car B travels 37 kilometers per hour. Two cars meet in a few hours.
5. List simple equations to solve practical problems
Xiangqun Stationery Factory can produce 250 pencil boxes per hour. How many hours can you produce 10000?
2. The factory sent a batch of coal, burned 28 tons, and left 13 tons. How many tons is this batch of coal? (Answer in two ways) 6. Application problems of calculation of cuboid, cube, surface area and volume (volume)
1, a rectangular iron box, length 18cm, width 15cm and height 12cm. How many square centimeters of iron does it take to make this iron box?
2. The side length of the cube is15cm. What is its surface area and volume?
1. Two trains leave from A and B at the same time, and meet at 48km after 4 hours. As we all know, the speed of the local train is five-sevenths that of the express train. What's the speed of the express train and the local train? How many kilometers is it between A and B?
2. With the cooperation of Party A and Party B, a batch of parts can be completed in 12 days ... After several days of cooperation, B asked for leave because of something, and B only completed three tenths of the total 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?
3. The construction of a section of highway was originally planned to be completed in 50 days for 120 people. After working for a month (calculated as 30 days), 20 people were transferred to repair other sections. How many days do the remaining staff need to work more than originally planned to complete the task?
1. What time does the train station clock strike? For example, 1 calls once, twice at 2 o'clock and once every half hour. How many times does this big clock strike every day and night?
Two cars drive from a to b at the same time. The car travels more than the big car12km/h. The bus will arrive in B in 4.5 hours. It returns along the original road and meets the cart at 3 1.5 km at B. How many kilometers does the cart travel per hour? A pool can be filled with a hose in 40 minutes and with a hose 1 hour. If two pipes are opened at the same time, how long will it take to fill three quarters of the whole pool?
4. Transport a batch of wheat with the same load, which is 5/6 of the total, 1 10 tons. How many tons are there in this batch of wheat?
Camping activities were held. At noon, the monitor went to the teacher in charge of logistics to get a bowl. The teacher asked, "How many people are there?" "One ***36." The monitor replied. The teacher said, "You can get it yourself, according to one person's rice bowl, two people's vegetable bowls and three people's soup bowls." This causes problems with the display. Can you help him?
6. There are 20 baskets of oranges, each weighing 27 kilograms. If each basket contains 1/9, how many kilograms is each basket? How many baskets can hold this basket of oranges?
7. A train can completely cross a 572-meter-long bridge in 64 seconds, while it only takes 20 seconds for the train to cross a tree on the roadside. How long is the train? Boshu% [yzl {。 d &； Title used by people who don't want to specify their gender.
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8. It takes 55 minutes for someone to travel from A to B at a speed of 12 km/h and from B to C, G and * * * at a speed of 9 km/h.. It takes 8km/yes to return from C to B, 4km/yes to return from B to A on Monday, and 1.5h to return to work. Find the distance between a and C.
An engineering team built a section of highway. A quarter of this road was built in the first week, and two-seventh was built in the second week. The second week is 2 kilometers more than the first week. How many kilometers is this road?
10. The distance between Party A and Party B is 240 kilometers. The speed of the car from Party A to Party B is 36 kilometers per hour, and the speed of the motorcycle from Party B to Party A is 24 kilometers per hour. 2.5 hours after the motorcycle leaves from Party B, the car also leaves from Party A. How many hours after the car leaves?
1 1. In order to meet the increasing demand of water consumption, Kunming recently built three water plants, A, B and C. The daily water supply of these three water plants is * *1/0.8 million cubic meters, of which the daily water supply of water plant B is three times that of water plant A and that of water plant C is/kloc-.
A football ticket 15 yuan. After the price reduction, the audience increased by half and the income increased by one fifth. How much is the ticket reduced?
13. A car travels from place A to place B within the scheduled time. If it is faster than the original regulation 12 km, it will arrive 39 minutes earlier, and if it is 8 km slower than the original regulation, it will arrive 39 minutes later. Find the distance between a and b.
14. Party A and Party B start from A and B at the same time and go in opposite directions. After meeting at a distance of 6 kilometers from B, they continued to move in the original direction. When they arrive at B and A respectively, they immediately return and meet at a distance of 4 kilometers. How many kilometers is the distance between A and B?
".Team A needs 20 days to do a job alone, and Team B needs 12 days to do a job alone. This work was first done by Party A for a few days, and then continued by Party B, and it took 14 days from beginning to end. Q: How many days did Party A and Party B do it?
16. There are 3200 chickens, ducks and geese on the farm. If chicken 1/3, duck 1/4 and goose 1/5 are sold, there will be 2400 poultry left. If you sell chicken 1/5 and duck 1/5.
6. One question: Party A and Party B visit the city. It takes Party A three hours to walk around the city. Now they both set off at the same time. It takes 4 hours for Party B to reach the original starting point after meeting with Party A, so as to find the time needed for Party B to walk around the city.
18. It is known that an iron bridge is 1000 meters long, and a train passes on the bridge. It takes 1 minute for the train to get on the bridge, and it takes 40 seconds for the whole train to completely cross the bridge. Find the length and speed of the train.
19. A woman is washing dishes by the river. People saw her and asked her why she used so many bowls. She replied that there were many guests at home. They share a dish bowl for every two people, a soup bowl for every three people, and a rice bowl for every four people, and * * * used 65 bowls. How many guests are there in her house?
20. Xiaoming has a packet of biscuits, and the number of four, five and six is more than one. How many biscuits does Xiaoming have in this bag?
1. Xiaoming reads a book. He originally planned to read 35 pages a day and finish it in 32 days. As a matter of fact, I read five more pages than planned every day. How many days did it actually take to read it?
2. build a road. It was originally planned to build 0.4 kilometers a day, which can be completed in 70 days. The actual number of meters repaired every day is 1.25 times as planned. How many days will it actually take to complete?
3. The greening team plans to plant trees and complete the task in 8 days. Actually, 240 trees were planted every day, and all the tree planting tasks were completed in 7 days. How many more trees are actually planted every day than planned?
4. A neighborhood committee expressed condolences to the families of martyrs and sent them brown sugar and white sugar. 2 bags of brown sugar and 5 bags of white sugar were distributed to every household. When they delivered it to the last household, the brown sugar had just arrived, and there were 10 bags of white sugar left. It is known that the number of bags of white sugar is three times that of brown sugar, so how many bags of brown sugar and white sugar do you bring?
The clothing factory has to process a batch of clothes. The first workshop and the second workshop were processed at the same time for 60 days, which has just been completed. It is known that the clothing processed in the first workshop accounts for 45% of the total clothing, and the second workshop processes 132 pieces every day. How many pieces are processed in the first workshop every day?
The washing machine factory plans to produce a batch of washing machines. Results 37.5% of the plan was completed in 9 days. According to this calculation, how many days will it take to complete the plan?
7. There is a pile of coal that can be burned 120 days. Due to the improvement of coal-burning technology, 0.25 tons of coal was saved every day, and as a result, this pile of coal burned 150 days. How many tons is this pile of coal?
8. Take seven yellow cattle and put them among the buffaloes, so that the number of the three groups of cattle is exactly the same. How many cows are there?
9. Workshop A and Workshop B process a batch of the same parts. If workshop A processes 35 pieces first, then workshop B processes 1 day first, and then workshop B starts processing again. After 5 days, the number of parts processed by the two workshops is equal. So how many parts does workshop B process in a day?
12. Grass100kg, with water content of 66%. After drying, the water content decreased to 65438 05%. How many kilograms do these grasses weigh after drying?
13. Reduce one side of the square by 1/5 and increase the other side by 4 meters to get a rectangle. This rectangle has the same area as the original square. So how many square meters is the square area?
14. A workshop processes A and B parts. Part a accounts for 30% of the processing part, and then 24 parts b are processed, at which time part a accounts for 25%. So how many two kinds of parts have been processed now?
15. Party A, Party B and Party C * * * produced 1760 pieces. If Party A produces 2/9 less and Party B produces 80 more, then the number of parts produced by Party A, Party B and Party C is equal. How much did A, B and C each produce?
16. Xiaoming's age this year is 65438+ 0/6 of his father's age. 15, his age is 4/9 of his father's age. How old are Xiaoming and his father this year?
17. There are 3 14 students in a school, of which 2/3 boys are 40 less than 4/5 girls. How many boys and girls are there in this school?
18. Class A and Class B have the same number of students, and some students in each class participated in the math group. The number of people in class A who participated in the math group was exactly1/3 of the number of people in class B who did not participate in the math group; The number of people who participated in the math group in Class B is exactly 0.4 of the number of people who did not participate in the math group in Class A+65438+A ... So, how many people who did not participate in the math group in Class A are from Class B?
19. There are several liters of alcohol solution in the container. After adding 1 liter of water, the pure alcohol content is 25%; Add 1 liter of pure alcohol, and the content of pure alcohol in the container is 40%. So how many liters of alcohol solution were there in the original container? What is the concentration?
20. Party A, Party B and Party C can finish copying a manuscript within 1 hour. If Party A and Party B copy together, it will take 80 minutes to complete; If B and C are copied together, it will take 100 minutes to complete. If this manuscript is copied by B alone, how many hours will it take to finish?
2 1. A single project can be completed in 20 days; B alone can be completed in 30 days. Now working together, the middle one rested for 3 days, and the second one rested for several days. It took 16 days to complete. B how many days did you rest?
22. It takes 8 hours to fill a pool of water and only open one pipe; It takes 12 hours to open only the second pipe; It takes 15 hours to open only the C tube. Starting today, only two pipelines A and B were opened, then two pipelines A and B were closed in the middle, and then pipeline C was opened. It takes 65,438+00 hours to fill a pool of water. So how many hours does it take to open the C pipe and inject water?
23. It takes 12 days for an engineering team to undertake a project. If only two teams, A and B, are allowed to exchange work contents, the whole project will be delayed for three days. If the two teams A and B are allowed to exchange work contents, and the two teams C and D are also allowed to exchange work contents, then the whole project can still be completed as scheduled. If only C and D teams are allowed to exchange work contents, the whole project can be completed a few days in advance.
24. Team A and Team B cooperate on a project. After team A worked alone for 6 days, team B joined in and worked with team A, and it took another 4 days to complete 1/3 of the whole project. After another 10 day, the whole project was completed by 3/4. Because group A has another task, group B will continue to work until the whole project is completed. How many days did it take from the beginning to the end?
25. Party A and Party B leave from A and B at the same time and go to B and A respectively, with the speed ratio of 7: 6. After they met, they moved on, and then B's speed increased every hour compared with the initial speed.
1. Two teams mow grass, each team cuts 3 bundles, each bundle weighs 8 kg. How many kilograms has a * * * lost?
2. Zhangjiazhuang Primary School has built 9 new classrooms, each with 6 windows, each with 8 pieces of glass. How many pieces of glass do you need to install a * * *?
3. Each bookshelf has five floors, and each floor has 30 books. How many books are put in three bookshelves?
The school held a broadcast gymnastics performance. There are 3 classes in Grade Three, Grade Four and Grade Five, each class has 16 students. How many people are there in the performance?
Continuous division of application problems (two solutions)
1. Seven boxes of thermos cups were sold in the store, each box was 12, and the income from one * * * was 336 yuan. How much is each thermos?
2. There are two classes in Grade Three, each class has 43 people, and each class has 258 trees. How many trees are planted in each class on average?
3. 100 The loan shop sold 3 boxes of gyroscopes, each containing 20 pieces. A * * * sold to 720 yuan. What is the price of each coat?
4. The school bought prizes for miyoshi students, two boxes of pens, one for each box 10 and one for 80 yuan. How much is each pen?
1. To transport 29.5 tons of coal, transport it three times by a truck with a load of 4 tons, and transport the rest by a truck with a load of 2.5 tons. How many times will it take to complete?
2. The trapezoidal site covers an area of 90 square meters, with an upper bottom of 7 meters and a lower bottom of 1 1 meter. How high is it?
A workshop plans to produce 5480 parts in April. It has been in production for 9 days, and there are 908 more to complete the production plan. How many pieces will be produced on average every day in these 9 days?
4. Two cars, Party A and Party B, are driving in opposite directions from two places 272km apart. Three hours later, the distance between the two cars is still 17km. A travels 45 kilometers per hour, and B travels how many kilometers per hour?
5. There are two classes in grade six in a school, and the average score of mathematics last semester is 85. There are 40 students in six classes (1) with an average score of 87. 1. There are 42 students in Class Six (2). What is the average score?
6. Party A and Party B walk in opposite directions from the same place at the same time. After 3.5 hours, the distance between them is 38.5 kilometers. A walks 5 kilometers per hour, and B walks how many kilometers per hour?
7. Five footballs are 62.5 yuan more expensive than five volleyballs. It is known that each volleyball costs 52.5 yuan. How much is each football?
8. A batch of coal can burn 3.6 tons every day for 30 days. If it burns 2.4 tons a day, how many days can it burn?
9. A football is 46.8 yuan, which is three times cheaper than a volleyball. 1.2 yuan, what is the price of a volleyball?
10. There are 270 apple trees in the orchard, which is three times less than that of pear trees. How many pear trees are there?
1 1, Aunt Wang bought 1 1 thermos, paid 200 yuan and found 35 yuan. How much is each thermos?
12, the circumference of a rectangle is 35 meters, the length is 12.5 meters, and how many meters is its width?
13, Wang Jun and Li Minghe * * have 54 stamps, Wang Jun has more than twice as many as Li Ming, Wang Jun and Li Minghe.
How many stamps are there per stamp?
14, two bags of rice * * * weight 104 kg, the weight of bag a is three times that of bag b, how many kilograms are two bags of flour?
15. It costs 8860 yuan to buy a computer and a color TV. As we all know, the price of computer is the price of color TV.
How much is a computer and a color TV?
16, students planted trees, 560 trees were planted in grade 5 and 6, and the number of trees planted in grade 6 was 1.5 of grade 5.
How many trees are planted in each grade?
17, two bags of flour * * * 88kg, the weight of bag A is three times that of bag B, how many kilograms are there in each bag?
18, two bags of flour, A is 34 kilograms heavier than B, A is three times as heavy as B, how much is each bag?
19. The young pioneers in the orchard picked 18 baskets of apples in the morning, which was less than that in the afternoon 100 kg.
I picked 22 baskets. How many catties does each basket of apples weigh on average?
20. In June this year, 5438+ 10, Li Ming's household electricity was 13 1 kwh, Wang Qiang's household electricity was 120 kwh, and Wang Qiang's family paid 5.5 less for electricity.
Yuan. How much is the average electricity per kilowatt hour?
2 1, there were some people on the bus, 25 people got on, then 8 people got off, and then there were 34 left.
People. How many people are there on the bus?
Uncle Wang is going to enclose a rectangular chicken farm with a 400-meter-long fence, if the length is very wide.
Three times. How long and wide is this chicken farm?
23. Uncle Wang is going to enclose a rectangular chicken farm with a 400-meter-long fence, if the length is much greater than the width.
80 meters. What is the length and width of this chicken farm?
24. A total of 360 trees were planted in the third and fourth grades, of which the number planted in the fourth grade was more than twice that in the third grade.
Thirty trees. How many trees were planted in the third grade?
The number of monkeys in the zoo is six times that of pandas, and there are 30 more monkeys than pandas, monkeys and bears.
How many cats are there?
The price of a pen is four times that of a ballpoint pen. Miss Li bought a pen and five beads.
Pen, a * * * spent 12.6 yuan. What is the unit price of pens and ballpoint pens?
27. The "Oriental Pearl" TV Tower in Shanghai is 468 meters high, which is 3 meters more than 3 1 times that of an ordinary house.
What is the height of this ordinary residential building?
28. Dad's age is 3.7 times that of Xiaoming, who is 27 years younger than his father. How old are Dad and Xiaoming?
9. Xiaoming buys five diaries 1 more story books. He knows the price of a story book.
It's exactly three times the price of a diary. How much is a diary?
30. The circumference of a rectangle is19.4m. The length is less than twice the width by 0.8m.. How many meters is the length and width of this rectangle?
3 1. The distance between the two places is 660 kilometers. Car A travels 32 kilometers per hour and car B travels 34 kilometers per hour.
The car starts from two places at the same time and travels in opposite directions. How many hours did they meet?
32. Xiaodong and Xiaoying walk away at the same time. Xiaodong walks 50 meters per minute and Xiaoying walks 45 meters per minute.
M, how many minutes later, the distance between them is 285 meters?
33. Two trains leave from A and B at the same time. The local train is 60 kilometers per hour, and the express train is small.
Time travel is 80 kilometers, and the distance between the two cities is 770 kilometers. After a few hours, the distance between the two cars is 2 10 kilometers.
34. The distance between Party A and Party B is 480 kilometers, and buses and trucks start from both parties at the same time.
Driving in the opposite direction, the bus speed is 70 kilometers per hour and the truck speed is 50 kilometers per hour. When they met, the two cars each
How many kilometers have you traveled?