(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 1/3 of the total amount is less than 12 bags 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. The ratio of 130% for Workshop A and Workshop B to complete the planned tasks is 8: 5, and Workshop B processes less flour 13.5 tons than Workshop A ... How many tons of flour was originally planned to process?
Application problem 2
(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 center of the street and used it in 900 yuan. Compared with the original plan, it saves 300 yuan and a few percent. & lt/P & lt； p & gt
(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 rectangular 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?
Application problem 3
(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 a project is jointly completed by two construction teams, it will take 65,438+02 days. 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?
Zhang Ming reads story books, reading 30 pages every day. Three days later, there are still books to read. How many pages does this story book have?
I ate a bottle of oil for the first time and the rest for the second time. There are still kilograms in the bottle at this time. How many kilograms is this bottle of oil?
There is a batch of rice in the canteen. After using the total weight, 260 kilograms were brought in. There is more rice now than before. How many kilograms of rice are stored now?
The sum of numbers A and B is 180. If the number A equals the number B, what are the numbers A and B respectively?
Xiao Fang is reading a novel. Before dinner, the pages she had read were unread. She has read eight pages after supper. At this time, the number of pages she has read is unread. How many pages does this novel have?
There were 54 students in the fifth grade, including girls, and later transferred to several girls. At this time, girls accounted for it. How many girls have been transferred?
Master Wang finished a batch of parts in four days. On the first day and the second day, * * * made 54 yuan, and on the third day and the fourth day, * * * made 90 yuan. It is known that the number of parts manufactured the next day accounts for the number of parts in this batch. How many parts are there in this batch?
Four people, A, B, C and D, planted 60 trees. The number of trees planted by Party A is three others, the number of trees planted by Party B is three others, and the number of trees planted by Party C is three others. How many trees did Ding Fang plant?
The water content of 4 tons of grapes in Xinjiang is 99%, and it is 98% after being shipped to Nanjing. How many tons of grapes are left after being shipped to Nanjing? (Other mildew losses on the way are not counted) Tip: The weight of raisins remains unchanged.
There is a basket of oranges, which I ate on the first day, the rest on the second day and the rest on the third day. Finally, there are eight oranges left in the basket. How many oranges were there in the original basket?
A pile of coal, the first time transported 15 tons, the second time left 120 tons. How many tons is this pile of coal?
Party A and Party B each deposit a few yuan. After Party A takes the deposit to Party B, Party B takes out the existing deposit to Party A, and at this time they each have 180 yuan. How much money do they each have?
A travels longer than B, and B takes more time than A.. Find the speed ratio of a and b ..
The weight ratio of rice stored in granary A and granary B is 8: 7. If 8 tons are transported from granary A to granary B, granary B stores more rice than granary A 17 tons ... Q: How many tons of rice are there in warehouse A?
15, build a road, the length ratio of the repaired road to the unrepaired road is 1: 5, and build another 490 meters. The ratio of repaired roads to unrepaired roads is exactly 3. What is the total length of this road?
16, the school red scarf hydrological station measures the depth of the river, inserts a pole into the river, and inserts the pole into the mud to expose the water. When the water level rises 12 cm, the water depth is just the benchmark. What is the initial depth of this river?
17, a piece of cloth is made of rice, the rest is used for the second time, and the second time is made of 6 meters. How long is this cloth?
Sixth grade score application problem
First, according to the meaning of the question, find out the unit "1" and tell the equal relationship of quantity.
The weight of fruit candy is the weight of milk candy.
There are more apple trees than pear trees 12.
The price of a basketball is equivalent to the price of a football.
There are seven fewer chickens than ducks.
A canal has been built.
There are more black rabbits than white rabbits.
When ice becomes water, its volume becomes smaller.
The actual water consumption is 20% less than the original plan.
Price reduction of a suit 15%
The output value of the factory increased by 5%.
The output of green vegetables has increased by 20% this year.
The qualified rate of parts produced by this factory is 99%
15% discount on apartments.
Last year, the grain output decreased by 10%.
the first group
The shop bought 25 bags of jackets, and the number of bags in the suit was jackets. How many bags of suits are there?
The store bought 15 packs of suits, which are coats. How many bags of jackets are there?
Pants 75 yuan, it's a coat. How much is this suit?
Mom bought a kilogram of fructose, which is butterscotch, and the crisp candy she bought is butterscotch. How much does shortbread weigh?
The store bought 20 Jin of apples and sold them. How many Jin did it sell?
A bag of rice, if eaten, is exactly 0.08 tons. How much does this bag of rice weigh?
the second group
I bought a bag of rice in the canteen, weighing 400 Jin. How many catties are left after eating?
I bought a bag of rice in the canteen and left 150kg. How many kilograms of rice did you buy?
I went to plant trees in the fifth and sixth grades. In the fifth grade, I planted 150 trees. In the sixth grade, I planted a total tree. How many trees were planted in the fifth and sixth grades? How many trees were planted in the sixth grade?
A canal has been built for 240 meters, leaving 60% of the total length. How long is this canal?
A pile of coal weighs 2 tons. How many tons did you use?
The young pioneers collected 57 specimens, including plant specimens and other insect specimens. How many specimens did the Young Pioneers collect?
Third groups
The site transported 18 tons of yellow sand, with less cement and how many tons more yellow sand than cement?
The water consumption of canteen 10 is less than that of September 12 tons, 10 is less than that of September 10%. How many tons are used in the canteen in September?
There are 20 footballs in the school. Basketball is more than just football. How many basketballs are there?
There are 20 footballs in the school. Football is not as good as basketball. How many basketballs are there?
The Central Group actually invested 654,380,800 yuan to build a building, which was 65,438+00% less than planned. How much money was saved than planned?
The original price of a DVD player was 1260 yuan, but now the price has been reduced. What's the current price?
One bundle of wires is120m long, which is shorter than the other. How long is the other bundle of wires?
Last year, 1500 trees were planted. We plan to plant 20% more trees this year than last year. How many trees are planned to be planted this year?
The price of a TV set is now 1500 yuan, which is 25% cheaper than before. How much did this TV set cost?
Fourth groups
The germination test was carried out with 300 corn seeds, and 288 seeds germinated, from which the germination rate was obtained.
760 kilograms of peanut oil can be squeezed out from 2000 peanut kernels, and the oil yield of peanut can be obtained.
In the sixth grade, there are 120 people engaged in activities, and three people are absent, so please ask for the attendance rate of this activity.
In the sixth grade math exam, 138 people passed, and 12 people failed. What is the passing rate of this exam?
200 orange trees were planted, and the survival rate was 98%. How many orange trees have died?
The qualified rate of parts produced in one workshop is 90%. How many parts must be produced now to ensure that 1800 parts are qualified?
A kind of wheat with a flour yield of 85% now has 40 tons of wheat. How many tons of flour can be ground?
Last year, 234 graduates from a middle school were promoted to a higher school, and the enrollment rate was 90%. How many graduates of this school have not been promoted to a higher school?
Fifth groups
Bus 18 and car 15 are parked in the parking lot.
How many times is a bus as a car?
A fraction of a car is a big car.
How much is the bus more than the car?
How much is a car cheaper than a bus?
Last year, the planned afforestation was 12 hectares, and the actual afforestation was 15 hectares. What percentage is the actual afforestation more than the original plan?
There are/kloc-0.5 peach trees and 20 loquat trees in the orchard. How many points are peach trees less than loquat trees?
Originally planned to produce120,000 washing machines this year, 4,000 more were actually produced. What is the percentage of overproduction?
This TV factory has produced 84,000 TV sets this year, 4,000 more than planned. What is the percentage of overproduction?
The motorcycle factory planned to produce 180000 motorcycles this year, and actually produced 200000 motorcycles. What is the percentage of overproduction?
Dongfeng fishing boat actually caught 42.5 tons in August, 7.5 tons less than planned. How many percent has the output decreased?
The original price of Sharp's 29-inch color TV is 2500 yuan, and the current price is 1800 yuan. What percentage is the current price?
The original price of Sharp's 29-inch color TV is 2500 yuan, and the current price is 1800 yuan. How much is the price reduction?
The original price of Sharp's 29-inch color TV is 2500 yuan, which is more expensive than the current price. How much is the price reduction, 700 yuan?
The current price of Sharp's 29-inch color TV is 1800 yuan, which is cheaper than the original price by 700 yuan. How much is the price reduction?
Sixth groups
A food stall with a turnover of 3,000 yuan in June. If the business tax is paid at 5% of the turnover, how much should the business tax be paid?
Cigarette factory's cigarette sales in July was150,000 yuan. If the consumption tax is paid according to 45% of sales, how much business tax should be paid in July?
Teacher Wang bought 1500 yuan national debt, fixed for 3 years, if the annual interest rate is 2.89%. How much can he get back when it expires?
On jun 1 2003, Mr Liu deposited RMB 8,000 in the bank for 2 years. If the annual interest rate is 2.43%, how much money can he get back when it expires?
Professor Zhang's income in January is as follows: salary is 2600 yuan, near 600 yuan, and contribution fee is 600 yuan. According to the new tax law, after deducting 1600 yuan, the tax will be paid at 5%. What is Professor Zhang's actual income in January?
The original price of an air conditioner in Suning Group was 3,200 yuan, and now it is 2,800 yuan. How much is this air conditioner?
The original price of a health equipment 1800 yuan is now sold at a 10% discount. How much cheaper than before?
8.8 discount sold out, sold to 880 yuan. What is the original price of this coat?
The total grain output of Wangxing Township was 40 million tons last year, and it is expected to reach 44.8 million tons this year. How much is the output expected to increase this year compared with last year?
Dongfang Village harvested 27.6 tons of wheat last year, an increase of 10% over the previous year. How many tons more than the previous year?
The balance of deposits in a bank last year was 65.438+047 billion yuan, an increase of 3.2 billion yuan over the previous year. What percentage was the increase? (Keep one decimal place before the percent sign)
Seventh groups
The ratio of male to female students in the math interest group is 5: 2, with 30 boys. How many girls are there?
The ratio of male to female students in the math interest group is 5: 2, and there are 30 girls. How many boys are there?
In the math interest group, the ratio of boys to girls is 5: 2, and there are 1 *** 140 boys and girls. How many boys and girls are there?
The number of men and women in the math interest group is 5: 2, and there are 30 more boys than girls. How many boys and girls are there?
The oxygen content in water is 8 times that of hydrogen. There are 72 grams of water now. How much oxygen can you get after decomposition?
A kind of concrete is made of cement, stones and sand in a ratio of 2: 3: 5. How many kilograms of cement, stone and sand do you need to make 2 tons of this concrete?
Kingsley Hotel wants to recruit a group of waiters according to the ratio of 3: 5 male to female. As a result, it recruited 120 people, including how many waitresses?
A brine, the ratio of salt to water is 1: 2 1, and now there is 2 1 g of salt. How many grams of salt water can you prepare?
A assorted candy is made of fruit candy, milk candy and crisp candy in a ratio of 4: 3: 5. There are 60 kilograms of toffee now. How many kilograms of fruit candy and crisp candy do you need to prepare this assorted candy?
Eighth groups
There are 60 fewer pine trees than willow trees, and willow trees are three times as many as pine trees. How many pines and willows are there?
There are 60 people in a workshop, and the number of male workers is female. How many men and women are there?
There are 56 more peach trees than apple trees. Peach trees belong to apple trees. How many peach and willow trees are there?
The number of pine trees is 2 less than that of willow trees. There are 56 willow trees. How many pine trees are there?
There are 3 more boys than girls in the chorus group, boys 15. How many girls are there?
There are 8 girls in the math interest group, and 2 girls are more than boys. How many boys are there?
There are 3 girls and 24 boys in the science and technology group. How many people are there in the science and technology group? ※?
Ninth groups
(1) A rope is 2 meters long. How many meters are left after cutting? (2) A rope is 2 meters long. How many meters are left after cutting off the meters?
The warehouse has 36 tons of steel, with 10% for the first time and tons for the second time. How many tons of steel are left?
A batch of 90 tons of cement was shipped for the first time and for the second time. How many tons were transported twice?
An engineering team built a road. The first week, the road was built, and the second week, the road was built. The second week built more kilometers than the first week. What is the total length of this road?
A book has 240 pages, and I read it on the first day. I read 35% the next day, and how many pages did I read on the third day and the third day?
There is a bag of rice. I ate 40% in the first week, and in the second week 12 kg, there were 6 kg left. How many kilograms is this bag of rice?
Xiaohong finished reading a book in three days. On the first day, she read 30% of the books. On the second and third day, she read 120 pages. How many pages are there in this book?
Group 10, engineering application problems
Repairing a section of highway will be completed in 0/0 day by Team A and 0/5 day by Team B. How many days can the two teams together complete?
How many hours does it take to type a manuscript an hour, type another one, and type together?
A project will be completed in 6 days by Party A and Party B, with Party A alone 10 days and Party B alone for how many days?
It takes 12 hour for Party A to process a batch of parts, 10 hour for Party B and 15 hour for Party C. How many hours does it take for three people to work at the same time?
A pile of goods can be transported for 4 hours by one car; Car B can be delivered in six hours by one person. How many hours does it take to transport this pair of goods by one car and one car?
Two trains leave from two cities at the same time. It takes 10 hour for one train to go from city A to city B, and 8 hours for another train to go from city B to city A. How many hours will the two trains meet?
It takes Zhang Hong five hours to print a manuscript. This manuscript has been typed by others, and the rest will be typed by Zhang Hong. How many hours will it take to complete?
For a plot of land, it takes 15 hours for tractor A to plow alone, and 10 hours for tractor B to plow alone. Tractor b plows the field for 2 hours before tractor a plows the field. How many hours does it take to finish ploughing?
For a job, it takes 8 hours for Party A to finish it alone, and the efficiency of Party B is A. How many hours does it take for Party A and Party B to finish the job together?
For a project, it takes 30 days for team A to do it alone, and the time for team B to do it alone is that of team A.. How many days does it take for Party A and Party B to cooperate to complete the project?
Group 1 1
The number of girls in interest groups is 3/7 of that of boys;
Boys 2 1, how many girls are there?
There are 42 people in the interest group. How many boys and girls are there?
Girls 12, how many more boys than girls?
There are 20 more boys than girls. How many boys and girls are there?
A kind of brine, the ratio of salt to water is 1: 1500.
How many kilograms of salt and water do you need to prepare 750.5 kilograms of this brine?
There are 540 kilograms of water. How many kilograms of salt do you need?
There are three kilograms of salt. How many kilograms of salt water can I exchange?
Now there are 3002 kilograms of salt water. How many kilograms is salt more than water?
Group 12, comprehensive exercise
Chinese cabbage 100, eating two fifths. How much did you eat?
A pile of coal is 12kg. Used some, and 1/4kg. How many kilograms did you use?
The number of chairs sold by a furniture factory is 1/5 of that of tables, and the number of chairs sold is less than that of tables 120. How many tables and chairs have you sold?
There are 720 peach trees and apricot trees in the orchard, and the number of peach trees is 5/4 times that of apricot trees. How many peach and apricot trees are there?
The apprentice processed 45 parts, 5 more than the master's 1/2. How many parts does the master machine?
Workshop B processes 15000 parts every day. After inspection, 30 waste products were found, and the qualified rate of these parts was found.
Xiao Li is shorter than Xiao Hua116. Xiao Li's height 135 cm. How tall is the floret?
There are 50 tons of coal in the canteen. On the first day, 5% of the total was used, and on the second day, 5/4 tons was used. How many tons of coal are left?
Last year, the planned afforestation was 12 hectares, and the actual afforestation was 15 hectares. What percentage is the actual afforestation more than the original plan?
On jun 1 2003, Mr Liu deposited RMB 8,000 in the bank for 2 years. If the annual interest rate is 2.43%, how much principal and after-tax interest can he withdraw at maturity?
Repairing a section of highway will be completed in 0/0 day by Team A and 0/5 day by Team B. How many days can the two teams together complete?
The school bought 120 white table tennis balls, 2/5 less than the yellow ones. How many of these two kinds of balls did you buy?
A wire is 20 meters long. How many meters does it need? (Use 20÷5×3, right? )
There are 1500 bags of rice in a granary. How many bags are left after shipment?
A piece of cloth, use it, there is rice left. How many meters is this cloth?
A steel bar is 100 meter long. How many meters does it take to use some?
An engineering team wants to dig a kilometer canal, and it has already dug kilometers. How many kilometers does it take to finish digging this canal?
The distance between a and b is 2 10 km. A car has traveled 55 kilometers from A to B. How many kilometers does it take to get to the whole place?
A road 1200m. Team a has been built. How many meters do I have to walk to get to 1000 meters?
A road 1200m. Team a has been built. How many meters does it take to reach the full length?
There are hectares of land, in which corn and cucumber are planted, and the rest are planted with lettuce, so find a place to grow lettuce.
A pile of coal was transported for the first time, and 2 1 ton was transported for the second time, leaving 14 ton. How many tons is this pile of coal?
A book, I read 12 pages on the first day and read the whole book the next day. How many pages are left in this book?
A bundle of wires is several meters long. How many meters are left after the first use and the second use?
A duckling weighs kilograms, and a chicken weighs more than a duckling. How much does this chicken weigh?
Sorry, that's all.