2. A barrel of oil weighs 8 kilograms, and after pouring out half of it, the barrel weighs 4.5 kilograms. How much does a barrel of oil weigh?
Divide a big fish into three parts: head, body and tail. The weight of fish tail is 4 kg, the weight of fish head is equal to the weight of fish tail plus half the weight of fish body, and the weight of fish body is equal to the weight of fish head plus the weight of fish tail. How much does this big fish weigh?
The school stipulates to arrive at school at 8 am. To go to school in Wang Qiang, if you walk 60 meters per minute, you can get to school 10 minutes earlier, and if you walk 50 meters per minute, you can get to school 8 minutes earlier. When did Wang Qiang leave home? How far is his home from school?
5. There are four classes in grade six in a school, including class one, class two, 8 1 person, class two, class three, 83 people, and class three, class four, 86 people. One class has two more people than class four. How many people are there in each of the four classes?
6. Xiaoming and Xiaohong went to the store to buy composition books, and they paid the same amount of money. They bought 20 books, and Xiaohong took four more than Xiaoming, so Xiaohong gave Xiaoming 1.2 yuan money. How much did Xiao Ming and Xiao Honghua spend?
7. The school organized 235 people to take part in labor. Half of the boys and 65,438+00 girls picked tomatoes, 65,438+05 girls picked lentils, and the rest of the students went to work in the yard. The number of boys and girls working in the yard is equal. * * * How many people are working in the hospital?
8. Warehouse A has 58 tons of goods and warehouse B has 32 tons of goods. Now warehouse A has 4 tons of goods every day, and warehouse B has 20 tons of goods every day. How many days later, the goods in warehouse B are twice as much as those in warehouse A?
9. The garment factory plans to use 2.2 meters of cloth for each set of children's wear. After improving the cutting method, each set saves 0.2 meters of cloth. You can make the original cloth for 600 sets of clothes. How many sets can we make now?
10. Each adult ticket to the museum is for 5 yuan, and two adults can bring one child for free, and each child ticket is for 4 yuan. If you buy a group of five people, each 3.8 yuan. Now there are three teachers and 14 children visiting. How much will it cost at least?
1 1, Xiao Wang spent 140 yuan bought a coat, a hat and a pair of shoes. A coat costs more than a hat, and a coat plus a hat costs more than shoes 120 yuan. How much is a pair of shoes?
12, Party A, Party B and Party C * * * went out of 27 yuan to buy a batch of exercise books in partnership, each with the same contribution. Since Party A needs 15 less than Party C, and both parties need the same amount, both parties give Party A 1.5 yuan. How many copies did the three partners buy?
13. The TV factory has received a batch of production tasks, and plans to produce 120 TV sets every day, which can complete the task on schedule. Actually, 10 sets were produced more than planned every day, and the task was completed 4 days ahead of schedule. How many TV sets are there in this batch?
14, two baskets of apples, A basket is more than B basket 19 kg. How many kilograms are taken from the first basket and put into the second basket, so that the number of kilograms of apples in the second basket is 3 kilograms more than that in the first basket?
Second, the trip.
1.A, B two cars start from east and west at the same time. Car A travels 56 kilometers per hour and car B travels 48 kilometers per hour. The two cars met at a distance of 32 kilometers from the midpoint. What's the distance between east and west?
2. Both cars of Party A and Party B travel from East Station to West Station at the same time. Car A travels12km more than car B every hour. After four and a half hours, car A arrives at the West Station without stopping, and immediately returns from the original road, and meets car B at a distance of 31.5km from the West Station. How many kilometers does car A travel per hour?
3. Two people ride bicycles along a 900-meter-long circular track. They traveled in opposite directions from the same place, so they met once in 18 minutes. If they drive in the same direction, and the fast train catches up with the slow train once in 180 minutes, how fast can they ride bicycles?
Both brother and sister leave home for school at the same time. My brother walks 90 meters per minute and my sister walks 60 meters per minute. When my brother arrived at the school gate, he found that he had forgotten his textbook. He immediately went home to get it along the original road and met his sister at 0/80 meters away from the school/kloc-. How far is their home from school?
5. There is a bus with a body 15 meters on the road, traveling from east to west, with a speed of 18 kilometers per hour. On the sidewalk by the roadside, there are two young people, A and B, practicing long-distance running. A from east to west, b from west to east. At a certain moment, the car caught up with A, and after 6 seconds, the car left A; Half a minute later, the car met the oncoming B; Two seconds later, the car left B. How many seconds later will A and B meet?
6. The distance between Party A and Party B is 360 kilometers, and buses and trucks leave from Party A for Party B at the same time. The speed of the truck is 60 kilometers per hour and the speed of the bus is 40 kilometers per hour. After the truck arrives at the second place, it stays for 0.5 hours and returns to the first place at the original speed. A few hours after starting from the first place, the two cars met.
7. The train and the local train leave from Party A and Party B at the same time, and meet in 12 hours. After the encounter, the express train took another 8 hours to reach B, and how many hours did the local train take to reach A?
8. The distance between the two places is 380 kilometers. There are two cars leaving from two places at the same time. Originally, car A planned to run at 36 kilometers per hour and car B planned to run at 40 kilometers per hour, but when driving, car A changed speed and left at 40 kilometers per hour. How many kilometers did B car travel less than originally planned when they met?
9. The distance between east and west towns is 240 kilometers. A bus goes from Dongzhen to Xizhen at 8 am, and a truck goes from Xizhen to Dongzhen at 9 am. At noon, the two cars met at the midpoint of the two towns. If both cars leave at 8: 00 a.m. with the same speed, how many kilometers are the two cars apart by morning 10? Depressed ing→ Wei's answer adoption rate: 51.5% 2009-06-1214: 251,the circumference of the rectangle is 9.8 cm, and the known length is 0.5 cm more than the width. What is the length, width and area of this rectangle?
2. 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?
3. The area of a trapezoidal field is 90 square meters, the upper bottom is 7 meters, the lower bottom is 1 1 meter, and the height is several meters.
A workshop plans to produce 5480 parts in April. It has been in production for 9 days, and 908 more are about to complete the production plan. How many pieces will be produced on average every day in these 9 days?
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?
6. There are two classes in grade six in a school, with an average score of 85 in mathematics last semester. 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?
7. The school bought 10 boxes of chalk. 250 boxes were used, and there are 550 boxes left. How many boxes per box?
There are 200 students in the fourth grade. During extracurricular activities, 80 girls went to jump rope. Boys are divided into five groups to play football. How many people are in each group?
9. The canteen brought 150 kg of rice, which was 30 kg less than the flour. How many kilograms of flour does the canteen send?
10. There are 52 peach trees and 6 rows of pear trees in the orchard. There are 20 more pear trees than peach trees. How many pear trees are there in each row on average? 5. The area of a triangular land is 840 square meters, the bottom is 140 meters, and the height is how many meters?
1 1, Li Shifu bought 72 meters of cloth to make 20 clothes for adults and 16 clothes for children. Adult dresses are 2.4 meters each, and how many meters are children's dresses?
12, three years ago, my mother was six times older than my daughter. This year, my mother is 33 years old. How old is my daughter?
13. How long will it take for a car with a speed of 50 kilometers per hour to catch up with a car with a speed of 40 kilometers per hour that left two hours ago?
14. Xiaodong bought 3 Jin of apples and 2 Jin of pears at the fruit shop and paid 15 yuan. 1kg apples are more expensive than 1kg pears in 0.5 yuan. How much are apples and pears per kilogram?
15, A and B start from A and B at the same time, respectively, in opposite directions. A travels at a speed of 50 kilometers per hour, and B travels at a speed of 40 kilometers per hour. A reaches the midpoint 1 hour earlier than B. How many hours does it take for A to reach the midpoint?
16, Party A and Party B set out from A and B at the same time, face to face, and meet two hours later. If A starts from place A and B goes in the same direction at the same time, then A will catch up with B after 4 hours. Given that the speed of A is 15km/, find the speed of B. ..
17, two ropes with the same length, the first one was cut15m, and the second one was 3m more than the first one. How long are these two ropes?
18, a school bought 7 basketballs and 10 soccer balls and paid 248 yuan. As we all know, the price of each basketball is equivalent to the price of three footballs. How much is basketball and football each? Five times the quotient. X minus 2.5 divided by 5, the difference is 38. Find X.
19, a number plus 25 equals the difference between 1 10 and 75. What's this number?
The product of 20, 5 and 9 minus three times a number is 2. 1. Find this number.
2 1, 3 times of a number is less than 5 times of it, 1.8, find this number.
The fruit shop sent 30 baskets of apples and 25 baskets of pears. Apple I is 25 kilograms heavier than pear. As we all know, each basket of apples weighs 30 kilograms. How many kilograms does each basket of pears weigh?
22. The children's bookstore brought 15 kinds of story books, each with 30 books. Some were sold, and there were 120 copies left. How many story books have been sold?
23. The area of a square is equal to the area of a triangle. As we all know, the side length of a square is 6 decimeters, and the bottom of a triangle is 9 decimeters. What is the height of this triangle?
Team 24 and Team B process 1680 parts in 6 days, and Team A processes 144 parts every day. How many parts does Team B process every day?
There are 3000 chickens and ducks in the chicken farm, and the number of chickens is three times that of ducks. How many chickens and ducks are there respectively?
26. Xiaoming went to buy breakfast. The money in the bag can buy 10 fried dough sticks and 5 steamed buns. After he bought two fried dough sticks, how many buns can he buy?
27. A piece of wood can make 10 chairs and 5 tables. Li Shifu first made two chairs from this piece of wood, so how many tables can he make? Supplementary answer: 1, 7 bags of rice and 3 bags of flour * * * weigh 425kg, and the same 3 bags of rice and 7 bags of flour * * * weigh 325kg. Find the weight of each bag of rice and flour.
2. A barrel of oil weighs 8 kilograms, and after pouring out half of it, the barrel weighs 4.5 kilograms. How much does a barrel of oil weigh?
Divide a big fish into three parts: head, body and tail. The weight of fish tail is 4 kg, the weight of fish head is equal to the weight of fish tail plus half the weight of fish body, and the weight of fish body is equal to the weight of fish head plus the weight of fish tail. How much does this big fish weigh?
The school stipulates to arrive at school at 8 am. To go to school in Wang Qiang, if you walk 60 meters per minute, you can get to school 10 minutes earlier, and if you walk 50 meters per minute, you can get to school 8 minutes earlier. When did Wang Qiang leave home? How far is his home from school?
5. There are four classes in grade six in a school, including class one, class two, 8 1 person, class two, class three, 83 people, and class three, class four, 86 people. One class has two more people than class four. How many people are there in each of the four classes?
6. Xiaoming and Xiaohong went to the store to buy composition books, and they paid the same amount of money. They bought 20 books, and Xiaohong took four more than Xiaoming, so Xiaohong gave Xiaoming 1.2 yuan money. How much did Xiao Ming and Xiao Honghua spend?
7. The school organized 235 people to take part in labor. Half of the boys and 65,438+00 girls picked tomatoes, 65,438+05 girls picked lentils, and the rest of the students went to work in the yard. The number of boys and girls working in the yard is equal. * * * How many people are working in the yard.
8. Warehouse A has 58 tons of goods and warehouse B has 32 tons of goods. Now warehouse A has 4 tons of goods every day, and warehouse B has 20 tons of goods every day. How many days later, the goods in warehouse B are twice as much as those in warehouse A?
9. The garment factory plans to use 2.2 meters of cloth for each set of children's wear. After improving the cutting method, each set saves 0.2 meters of cloth. You can make the original cloth for 600 sets of clothes. How many sets can we make now? 10. Each adult ticket to the museum is for 5 yuan, and two adults can bring one child for free, and each child ticket is for 4 yuan. If you buy a group of five people, each 3.8 yuan. Now there are three teachers and 14 children visiting. How much will it cost at least?
10, Xiao Wang spent 140 yuan bought a coat, a hat and a pair of shoes. The price of coats is more than that of hats. 90 yuan, coats and hats are more than shoes 120 yuan. How much is a pair of shoes?
1 1, Party A, Party B and Party C went out of 27 yuan to buy a batch of exercise books in partnership, each with the same contribution. Since Party A needs 15 less than Party C, and both parties need the same amount, both parties give Party A 1.5 yuan. How many copies did the three partners buy?
12. The TV factory has received a batch of production tasks, and plans to produce 120 TV sets every day, which can complete the task on schedule. Actually, 10 sets were produced more than planned every day, and the task was completed 4 days ahead of schedule. How many TV sets are there in this batch? Supplementary answer: 13, two baskets of apples, basket A is heavier than basket B19jin. How many kilograms are taken from the first basket and put into the second basket, so that the number of kilograms of apples in the second basket is 3 kilograms more than that in the first basket?
14.A and B both start from east and west at the same time. Car A travels 56 kilometers per hour and car B travels 48 kilometers per hour. The two cars met at a distance of 32 kilometers from the midpoint. What's the distance between east and west?
15, two cars, Party A and Party B, drive from East Station to West Station at the same time. Car A travels12km more than car B every hour. After four and a half hours, car A arrives at the West Station without stopping, and immediately returns from the original road, and meets car B at a distance of 31.5km from the West Station. How many kilometers does car A travel per hour?
16, two people rode bicycles along a 900-meter-long circular runway, traveling in opposite directions from the same place, so they met once after 18 minutes. If they drive in the same direction, then 180 minutes later, the express train catches up with the local train once, so how fast can they ride bicycles?
17, brother and sister both left home for school at the same time. My brother walks 90 meters per minute and my sister walks 60 meters per minute. When my brother arrived at the school gate, he found that he had forgotten his textbook. He immediately went home to get it along the original road and met his sister at 0/80 meters away from the school/kloc-. How far is their home from school?
18, there is a bus with a body of 15 meters on the road, traveling from east to west, with a speed of 18 kilometers per hour. On the sidewalk by the roadside, two young people, A and B, are practicing long-distance running. A from east to west, b from west to east. At a certain moment, the car caught up with A, and after 6 seconds, the car left A; Half a minute later, the car met the oncoming B; Two seconds later, the car left B. How many seconds later will A and B meet?
19, A and B are 360 kilometers apart, and buses and trucks leave from A to B at the same time. The speed of the truck is 60 kilometers per hour and the speed of the bus is 40 kilometers per hour. After the truck arrives at the second place, it stays for 0.5 hours and returns to the first place at the original speed. A few hours after starting from the first place, the two cars met.
20. The train and the local train leave from Party A and Party B at the same time, and meet in 12 hours. After the encounter, the express train took another 8 hours to reach B, and how many hours did the local train take to reach A?
2 1, the distance between the two places is 380 kilometers. There are two cars leaving from two places at the same time. Originally, car A planned to run at 36 kilometers per hour and car B planned to run at 40 kilometers per hour, but when driving, car A changed speed and left at 40 kilometers per hour. How many kilometers did B car travel less than originally planned when they met?
22. The distance between east and west towns is 240 kilometers. A bus leaves East Town at 8: 00 a.m., a truck leaves West Town at 9: 00 a.m., and the two cars meet at the midpoint between the two towns at noon 12. If the two cars leave at 8: 00 a.m. and the speed remains the same, how many kilometers will the two cars be apart by morning 10?