2. The plastic factory planned to produce 1300 plastic modules, and produced 780 plastic modules in 6 days. According to this calculation, how many days will it take to produce the rest?
Li Shifu produced 252 parts in four hours in the morning, and worked at this speed for three hours in the afternoon. How many parts does Li Shifu produce on this day?
The cement plant plans to produce 3600 tons of cement, which will be completed in 20 days. In fact, it produces 20 tons more than planned every day. How many days does it actually take to complete the task?
5. A pile of 3.6 tons of coal is planned to burn 10 day. After improving the stove, it saves 0.06 tons per day compared with the original plan. How many days can this pile of coal burn now?
6. The distance between A and B is 420km, and a bus is planned to travel from A to B for 7 hours. In fact, its speed is more than planned 10 km. How many hours will it actually arrive?
7. Xiao Qiang goes back to school from home. If he walks 50 meters every minute, 12 minutes to go back to school. If he walks 10 meter per minute, he can go back to school a few minutes earlier.
8. Build a 6.4-kilometer expressway. In the first three months,1.2km was built on average every month, and the rest were repaired every month. How many months will it take?
9. Xiaoming spent 10.2 yuan on stationery, bought six pencils at 0.45 yuan each, and bought ballpoint pens for the rest. How many can he buy for each 2.5 yuan?
10. The garment factory originally planned to make 120 suits, each with 4.8m cloth. After improving the cutting method, each set saves 0.3 meters of cloth. How many sets of clothes can be made from the original cloth now?
1 1. A story book, originally 576 words per page, 25 pages. The second edition, with smaller words, only needs 18 pages. How many words are arranged on each page now than before?
12. A passenger train and a freight train leave from Party A and Party B at the same time. The speed of passenger trains is 80 kilometers per hour, and that of freight trains is 60 kilometers per hour. Five hours later, two trains met. How many kilometers is the railway between A and B?
13. Two engineering teams open1500m tunnel at the same time. Construction team A starts from one end and digs 14m every day. Construction team B starts from the other end and digs 16m every day. How many days can the tunnel be dug?
14. Party A and Party B type a 7000-word manuscript at the same time. Party A types 600 words per hour, and Party B types 200 words more than Party A. How many hours does it take to complete the task?
15. After school, Xiao Ming and Xiao Qiang walk in opposite directions at the school gate. Xiaoming walks 70 meters per minute, and Xiao Qiang walks 68 meters per minute. How many meters are they apart after 5 minutes?
16, the distance between a and b is 630 kilometers. Two hours after the bus departs from A, the truck departs from B. It is known that the speed of the bus is 65 kilometers per hour and the speed of the truck is 60 kilometers per hour. A few hours after the van left, it met the bus.
1. Machine tool factory used to know that each machine tool used steel 1.02 tons. After the improved design, each machine tool saves 0. 12 tons compared with the original machine tool. The first 300 machines used steel. How many machines can be made now?
Xiaoming bought six pencils and four exercise books, each of which cost 0.68 yuan, and each pencil cost 0.24 yuan. Xiao Ming paid 5 yuan money, how much should he get back?
3. Two trains, A and B, leave from two places at the same time. The speed of train A is 80 kilometers per hour, and that of train B is 70 kilometers per hour. 12 hours later, the distance between the two trains is still 1 10 km. How many kilometers are there between these two places?
4. Guangming Paper Mill produced a batch of newsprint, which was originally planned to be completed in 28 days, with a daily output of 12.5 tons. The application was completed three days in advance. How many tons is the actual daily output more than originally planned?
5. Li Shifu has produced a batch of parts. Three days ago, 126 parts were produced. According to this calculation, it takes 12 days to complete the production task. How many parts are there in this batch?
The chemical fertilizer plant planned to produce 84 tons of chemical fertilizer in 30 days, but actually produced 0.2 tons more than planned every day. How many days did it actually finish the task ahead of schedule?
7, processing a batch of clothes, processing 300 sets a day, 16 days can be completed,
(1) If 400 sets are processed every day, how many days will it be completed in advance?
(2) If 20 sets are processed every day, how many days can it be completed?
(3) If it is to be completed five days in advance, how many sets will be processed every day?
8. A car factory planned to produce16,800 cars throughout the year, and as a result, the annual production task was completed two months ahead of schedule. At this rate, how many cars can be produced throughout the year?
9. A workshop of Xinfeng Agricultural Machinery Factory processes 2480 parts. Originally, 100 pieces were processed every day, and after working for 20 days, 120 pieces were processed every day. So we can finish the task in a few days.
10, a clothing factory used to make a children's dress, using 2.2 meters of cloth each time. Now the cutting method has been improved, and each set saves 0.2 meters of cloth. The cloth used to make 600 sets of this kind of clothes, how many sets can be made now?
1 1. Xiaohong bought three exercise books and three new word books, one at 0.36 yuan and the other at 0.32 yuan. How much did Xiaohong spend less on new word books than on exercise books?
12, students carry water to water trees. Forty-five trees were watered in the third grade, 10 fewer trees were watered in the third grade than in the fourth grade, and half fewer trees were watered in the fourth grade than in the fifth grade. How many more trees are watered in the fifth grade than in the third grade?
13, two engineering teams jointly opened a tunnel, each digging from one end. The first team drives 12.6 meters every day, and the second team drives 14.4 meters every day. Five days after the first team dug, the second team joined, and the 2 1 day tunnel was finally opened.
How long is this tunnel?
(2) How many meters did the two teams dig when they got through?
14, the speed of the car is 63 kilometers per hour, and the speed of the car is 1.4 times that of the truck. They started from two places 270 kilometers apart at the same time and drove in opposite directions.
(1) How many hours did you meet?
(2) How many kilometers did the two cars travel when they met?
(3) If it is 8: 00, 15, when will we meet?
1. The road team will build a road with a length of 180 km. It turned out that it was built 6 kilometers a day. /kloc-speed up after 0/5 days, and build 7.5 kilometers a day. How many days will it take to complete this road?
1, (180-6×15) ÷ 7.5 =12 (days)
2. The construction site needs sand 106 tons, and car transportation 15 times, with 2.4 tons each time. The rest are transported by cart, 5 tons each time. How many times will it take to complete? (Draw and check)
2. (106-2.4×15) ÷ 5 =14 (times)
Zhang Li bought four fables and four English humors, gave them 20 yuan and took them back to 7.6 yuan. Every fable 1.6 yuan. How much is each English humor?
3. (20-7.6) ÷ 4-1.6 =1.5 (yuan)
There used to be 30 boats in People's Park, which could bring 540 yuan's income every day. Now there are more 15 boats than before. What's your daily income now?
4, 540 ÷ 30× (30+15) = 810 (yuan)
5. The TV factory originally planned to produce 1680 color TV sets in 36 days, but half of them were completed in the first 16 days. The rest of the plan will be completed within 6 days. How many units are produced on average every day?
5, 1680 ÷ 2 ÷ 6 = 140 (Taiwan Province)
1. A factory has a batch of coal. It was originally planned to burn 5 tons a day, which can last for 45 days. In fact, it burns 0.5 tons less every day. How many days can this batch of coal burn?
1, 5× 45 ÷ (5-0.5) = 50 (days)
2. The school bought150m long plastic rope, cut off 7.5m first, and made three skipping ropes with the same length. According to this calculation, how many plastic ropes are left?
2.( 150-7.5) ÷ (7.5 ÷ 3) = 57 (root)
3. To build the canal, it was originally planned to build 0.48km every day and complete it in 30 days. Actually, it's repairing 0.02 kilometers every day. How many days was it actually repaired?
3.0.48× 30 ÷ (0.48+0.02) = 28.8 (days)
4. Miss Wang reads a book. If he reads 32 pages every day, 15 days will be enough. Now I read 40 pages a day. I can finish reading them a few days in advance.
4. 15-32× 15 ÷ 40 = 3 (days)
A car traveled 260 kilometers in four hours. At this speed, it traveled for another 2.4 hours. How many kilometers have you traveled before and after? (Answer in two ways)
5, 260 ÷ 4× 2.4+260 = 4 16 (km) 260 ÷ 4× (4+2.4) = 4 16 (km)
6. Shihe Farm first dispatched 8 harvesters to harvest late rice, and harvested 19.2 hectares two days ago, and then increased to 13 harvesters. At the same speed, they cut for another four days. How many hectares of land have they cut down?
6.19.2 ÷ 2 ÷ 8× 4×13+19.2 = 81.6 (hectare)
7. The distance between Party A and Party B is 600 kilometers. A bus and a truck run from Party A to Party B at the same time. The bus arrived four hours earlier than the truck. When the bus arrived at Party B, the truck traveled 400 kilometers. How long does the bus take to complete the journey?
7,600 ÷ [(600-400) ÷ 4]-4 = 8 (hours) or 4 ÷ (600 ÷ 400- 1) = 8 (hours).
The distance between Party A and Party B is 500 kilometers. Party A travels 30 kilometers per hour and Party B travels 20 kilometers per hour. How many hours did you meet when you left at the same time?
500÷(30+20)= 10
1. This store has 2 10 color TV sets, which is 3 times more than black and white TV sets. How many black and white TV sets are there in this shop?
1.63 sets
2. Use a wire with the length of 12.4 decimeter to form an isosceles trapezoid. It is known that the two waists of this trapezoid are 6.4 decimeters long and the area is 9 square decimeters. What is the height of this trapezoid? (Equation solving)
2.3 meters
There are several geese and ducks in the river, among which the number of ducks is four times that of geese. It is also known that there are 27 geese in Abby Mallard. How many are there in each goose and duck?
There are 9 geese and 36 ducks.
4. A forest farm should plant 2000 trees, with an average of 350 trees per day in the first three days. The rest are required to be planted in two days. How many trees should be planted on average every day?
4.475 trees
The bottom of the triangular flower bed is 14 meter and the height is 70 decimeters. How many square meters is this flower bed?
2. Two identical trapezoids, with the upper bottom length of 15cm, the lower bottom length of 24cm and the height of 12cm. If these two trapezoids are put together to form a parallelogram, what is the area of this parallelogram?
The triangle has an area of 390 square centimeters and a height of 26 centimeters. How many centimeters is its bottom?
4. parallelogram vegetable fields with a bottom of 30 meters and a height of 25 meters. If you harvest 15 kg of vegetables per square meter, how many kg of vegetables can this vegetable field harvest at a time?
5. A trapezoidal orchard with an upper bottom of 58 meters, a lower bottom of 44 meters and a height of 20 meters, if an apple tree is planted every 4 square meters. How many apple trees can be planted in this land?
An express train and a local train met on the way. The express train is 400 meters long and travels 1 100 meters per minute. The local train is 600 meters long and travels 900 meters per minute. How many points does it take for the two trains to meet and leave completely?
A 2-meter-long ventilation duct with a circular cross section with a diameter of 2 decimeters. How many square decimetres of iron sheet do you need to make this ventilation duct?
2. Immerse an iron block with a volume of 80 cubic centimeters into a rectangular container with a bottom area of 20 square centimeters, and the water level is 10 centimeters. How high is the water level if the iron block is taken out?
3. Make 12 rectangular metal chimneys, each section is 2m long, 4m wide and 3m high. How many square meters of metal should be used at least?
The floor of Xiao Min's room is rectangular. It is 5 meters long and 3 meters wide, and has a 2 cm thick wooden floor. How many cubic meters of wood do you need at least?
5. A coal truck is 2.5m long and1.8m wide when viewed from the inside, and the loaded coal is 0.6m high, with an average weight of1.5t per cubic meter. How many tons of coal does this truck carry?
6. A rectangular tin bucket without a lid, the bottom of which is a square with a side length of 4m and a height of1m.. How much iron does it take to make such a barrel? How many liters of water can this barrel hold?
7. The stadium is paved with 37.5 cubic meters of cinder on a straight runway with a length of 100 meter and a width of 7.5 meters. How thick can cinder be spread?
8. Rectangular children's swimming pool, 40m long,14m wide and1.2m deep. How many square bricks with an area of 16 square decimeter should be pasted on the wall and bottom of the pool now?
9. A cuboid container with a bottom area of 16 square decimeter and a water height of 6 decimeters is now placed in an iron block with a volume of 24 cubic decimeters. How high is the water surface at this time?
10,2100 cubes with a side length of 1 cm are stacked into a cuboid. Its height is 10 cm, and its length and width are greater than its height. What is the circumference of its bottom?
1 1, a rectangular iron sheet with a length of 32 cm, and a square with a length of 4 cm at the lower side of its four corners, then folded and welded into a rectangular iron sheet box without a cover. It is known that the volume of this iron box is 768 cubic centimeters. What is the area of this iron?
12. A rectangular glass jar, with a bottom area of 200 square centimeters and a height of 8 centimeters, contains water with a depth of 4 centimeters. Now put a stone into the water, and the water level will rise by 2 cm. What is the volume of this stone in cubic centimeters?
1. When a factory originally needed 144 to make a machine, it took 48 hours to make a machine after improving the technology. How many machines can you make now, instead of 60 machines?
Xiao Liang spends more money on books than pencils, 0.5 yuan. I bought three pencils at 0. 15 yuan each and five notebooks at 0.65438 yuan each. (column equation solution)
Xiaoming and Xiao Fang are in the same hospital. Xiao Fang walks 50 meters to school every minute. 12 goes to school. Xiaoming walks more than Xiao Fang at school 10 meter. How many minutes does it take Xiao Ming to get to school?
4. The bottom of a trapezoid is 220 meters long, the bottom is 340 meters long and the height is 57.5 meters, with 354.2 thousand oilseeds. How many kilograms of oilseeds are produced on average per hectare?
Two cars, A and B, leave from A and B respectively and meet in 2.5 hours. When they meet, B travels105km, and continues to travel after meeting. After the two cars A and B arrive at B and A respectively, they will drive back immediately. When they met for the second time, B was 90 kilometers away from A, and they asked for the distance between A and B. ..
1.3 tractor cultivates 25.5 hectares in 3.4 hours. How many hectares of farmland does each tractor plow per hour on average? (two ways) (8 points)
2.4.3kg of apples 2 1.5 yuan, 2kg of oranges 16 yuan. How many times more expensive are oranges than apples? (4 points)
1. One pen 8.5 yuan, three ballpoint pens 16.5 yuan. How much is a ballpoint pen cheaper than a pencil?
Aunt Wang bought 400 grams of Cordyceps sinensis and put it in a small bag. If each packet is 30 grams. How many small bags should I prepare at least? (Numbers are reserved as integers)
3. Shimonoseki Kindergarten bought 380 meters of cloth as children's garden clothes. Children's Park takes cloth1.2m each. How many sets can you make at most? (Numbers are reserved as integers)
4. A worker makes 1 5 parts in1hour, and the same worker makes 4.5 hours * * * How many parts are there?
5. A car goes from A to B at a speed of 45 kilometers per hour and arrives in 2.4 hours. I traveled for 2.5 hours when I came back. How many kilometers do I drive per hour on average?
6. The grain store sent 50 bags of rice and 40 bags of flour, each containing 25 kilograms of rice and 20 kilograms of flour. How many kilograms is rice more than flour?
7. Qingfeng pesticide plant bagged 3,000 kilograms of pesticides. 500 bags were packed first, each bag was 50 kilograms. The rest are packed in small bags of 25 kg each. Will 250 packets be enough?
There are five people in Wang Yong's family. In September, the electricity consumption was 250 kWh, and the payment per kWh was 0.65 yuan. How much does the average person in his family pay for electricity in September?
1.3 tractor cultivates 25.5 hectares in 3.4 hours. How many hectares of farmland does each tractor plow per hour on average? (two ways) (8 points)
2.4.3kg of apples 2 1.5 yuan, 2kg of oranges 16 yuan. How many times more expensive are oranges than apples? (4 points)
1. There are 36 boys and 3 girls in Class 5 (1) in Dai Nan Primary School. What is the percentage of boys in the class? What is the percentage of boys to girls?
The road team built a road. On the first day, the road was completed. On the second day, how many parts were left?
3. Make a rectangular water tank without cover with iron sheet, which is 10 decimeter long, 8 decimeters wide and 5 decimeters high. How many square decimetres of iron should be used at least? How many liters of water can this tank hold?
4. Master Zhang made 1 1 in four days, Master Liu made 1 1 in three days and Master Wang made 10 in four days. Who runs fastest? Who is the slowest?
After dividing by a score, you get 5/6. It is known that the sum of denominators of protomolecules is 55. What was the original score?
1. There are 182 students in the Science and Technology Group of Children's Palace in a school, and the number of boys is 1.6 times that of girls. How many boys and girls are in the science and technology group in this school?
Xiao Ming and Xiao Ying started from two places1240m apart and walked in opposite directions. Xiaoming's speed is 80m/min, and Xiaoying's speed is 75m/min. How many minutes did they meet?
3. Master and apprentice process 389 parts together, master processes 42 parts per hour, apprentice processes 34 parts per hour, master and apprentice process 4 hours together, and the rest is completed by apprentice. How many hours does the apprentice need to process?
Xinhua primary school donated money to Project Hope. Four classes in grade four donated an average of 95.20 yuan per class, while three classes in grade five donated 3065438 yuan +0.35 yuan. How much did each class in grade four and five donate?
5. To build the expressway, it was originally planned to build 0.52 meters every day and complete it in 40 days. Actually, 0. 12m more than originally planned is repaired every day. Actually, it will take a few days to finish.
The school canteen uses 1200 pairs of disposable chopsticks every week, each pair of chopsticks is 0. 03 yuan, how much is the chopsticks used every week?
How about a month?
1. A construction site needs 44.5 tons of loess, which was transported 10 times by a truck with a load of 2.5 tons, and the rest was transported by a truck with a load of 1.5 tons. How many times will it be transported?
2. The chemical fertilizer plant plans to produce 540 tons of chemical fertilizer in 36 days, but actually produces 5 tons more every day. How many days will it take to actually finish?
3. The farm tool factory initially manufactured five farm tools, using steel 1.8 tons. After technical innovation, a kind of steel which can save 0.04 tons was produced. The original factory made 240 farm tools out of steel. How much can it make now?
4. The kindergarten bought five towels and five bars of soap. The towel * * cost 2 1.5 yuan and the soap * * cost 13.2 yuan. How much is a towel more expensive than a bar of soap? (Answer in two ways)
5. The fruit shop delivered 45 baskets, with more apples 10 and more oranges 1.2 times. How many baskets of oranges are shipped more than pears?
6. Two workers, A and B, dig the same cave on both sides of the mountain at the same time. Team A drives13.8m every day, while team B drives15.2m every day for 40 days. How many meters is this cave?
7. Two production teams of Jiangnan Textile Factory weave 3240 meters together. Group A weaves118m every day, while Group B weaves125m every day. How many days have the two organizations finished, and there are 324 meters left?
8. A car travels from place A to place B at a speed of 42.5 kilometers per hour, 1.5 hours. At this time, it is 26 kilometers away from the midpoint of the two places. How many kilometers is it between A and B?
9. The passenger and freight vehicles depart from the opposite directions of Party A and Party B at the same time, with the passenger car speed of 42 kilometers per hour and the truck speed of 50 kilometers per hour. Four hours later, the distance between the two cars is still 100 km. What is the distance between a and b?
10, Xiaojun and Xiaoping walked back from A at the same time. Xiaojun walks 70 meters per minute, and Xiaoping rides a bike five times faster than Xiaojun. A few minutes later, they were 3360 meters apart.
1 1, A and B are 660 kilometers apart. A car and a truck leave from A and B relatively. The car travels 48 kilometers per hour, the truck travels 35 kilometers per hour, and the car leaves. A few hours after the truck left, two cars met.
12.A and B leave AB relatively at the same time. Car A travels at a speed of 42 kilometers per hour, and car B travels at a speed of 50 kilometers per hour. On the way, car A stopped driving for 48 minutes due to a fault, and the two cars met on the way 5.3 hours after the departure of car B. How many kilometers is it between A and B?
13. A car goes from place A to place B at a speed of 42.5 kilometers per hour, 1.5 hours. At this time, it is 26 kilometers away from the midpoint of the two places. How many kilometers is it between A and B?
14. Buses and trucks leave from Party A and Party B at the same time. The bus travels 42 kilometers per hour and the truck travels 50 kilometers per hour. After 5.3 hours on the road, two cars met on the road. How many kilometers is it between Party A and Party B?
15, the distance between Party A and Party B is 500 kilometers. The two cars leave the two places at the same time and meet after five hours' driving. Passenger cars average 60 kilometers per hour, and trucks average how many kilometers per hour?
16. A chemical fertilizer plant 10 produced 200.5 tons of chemical fertilizer in the first half of October, 40.2 tons more than in the second half. How many tons of chemical fertilizer are produced in October?
17. there is a batch of coal in the village of agricultural machinery factory. It was originally planned to burn 1.2 tons per day, which can be burned for 25 days. In fact, it can burn for 30 days. How many days a day?
18, A and B are 800 kilometers apart. Two trains leave from A and B at the same time. After five hours, the distance is still125km. One train runs at 65 kilometers per hour, another train runs at 65 kilometers per hour, how many kilometers per hour is the other train?
19. In the past, it took a factory 144 hours to manufacture a machine. After improving the technology, it can take 48 hours less to make a machine. How many more machines can be made in the time of making 60 machines? (Answer in two ways)
20. Xiao Jia spends more money on a book than a pencil. 0.5 yuan bought three pencils, each 0. 15 yuan, and five books. How much is each?
2 1. Workshop A of a factory was originally less than workshop B. Now 10 people have been transferred from workshop A to workshop B. At this time, the number of people in workshop B is three times that of workshop A. How many people are there in workshop A and workshop B?
1.There are 83 students in Class A and Class B, 86 students in Class B and Class C, and 85 students in Class C. How many students are there in each class?
2. Two cows and four sheep graze 27kg a day, six cows and 15 sheep graze 90kg a day, 1 cow and 1 sheep graze 90kg a day.
4. Four basketballs and three volleyballs * * cost 14 1 yuan, five basketballs and four volleyballs * * cost 180 yuan. How much is basketball and volleyball each?
5. Xiao Qiang buys 5 boxes of sugar and Xiaohong buys 5 boxes of cakes, which makes a total of 44 yuan. If Xiao Qiang and Xiaohong exchange a box, the price of everything will be equal. How much is a box of sugar and a box of cake?
6. There are 10 red balls, black balls * *, 7 red balls, white balls * *, and 5 black balls * * *. How many balls are there in each of the three kinds?
1.There are 83 students in Class A and Class B, 86 students in Class B and Class C, and 85 students in Class C. How many students are there in each class?
2. Two cows and four sheep graze 27kg a day, six cows and 15 sheep graze 90kg a day, 1 cow and 1 sheep graze 90kg a day.
4. Four basketballs and three volleyballs * * cost 14 1 yuan, five basketballs and four volleyballs * * cost 180 yuan. How much is basketball and volleyball each?
5. Xiao Qiang buys 5 boxes of sugar and Xiaohong buys 5 boxes of cakes, which makes a total of 44 yuan. If Xiao Qiang and Xiaohong exchange a box, the price of everything will be equal. How much is a box of sugar and a box of cake?
6. There are 10 red balls, black balls * *, 7 red balls, white balls * *, and 5 black balls * * *. How many balls are there in each of the three kinds?
1.There are 83 students in Class A and Class B, 86 students in Class B and Class C, and 85 students in Class C. How many students are there in each class?
2. Two cows and four sheep graze 27kg a day, six cows and 15 sheep graze 90kg a day, 1 cow and 1 sheep graze 90kg a day.
4. Four basketballs and three volleyballs * * cost 14 1 yuan, five basketballs and four volleyballs * * cost 180 yuan. How much is basketball and volleyball each?
5. Xiao Qiang buys 5 boxes of sugar and Xiaohong buys 5 boxes of cakes, which makes a total of 44 yuan. If Xiao Qiang and Xiaohong exchange a box, the price of everything will be equal. How much is a box of sugar and a box of cake?
6. There are 10 red balls, black balls * *, 7 red balls, white balls * *, and 5 black balls * * *. How many balls are there in each of the three kinds?
1.There are 83 students in Class A and Class B, 86 students in Class B and Class C, and 85 students in Class C. How many students are there in each class?
2. Two cows and four sheep graze 27kg a day, six cows and 15 sheep graze 90kg a day, 1 cow and 1 sheep graze 90kg a day.
4. Four basketballs and three volleyballs * * cost 14 1 yuan, five basketballs and four volleyballs * * cost 180 yuan. How much is basketball and volleyball each?
5. Xiao Qiang buys 5 boxes of sugar and Xiaohong buys 5 boxes of cakes, which makes a total of 44 yuan. If Xiao Qiang and Xiaohong exchange a box, the price of everything will be equal. How much is a box of sugar and a box of cake?
6. There are 10 red balls, black balls * *, 7 red balls, white balls * *, and 5 black balls * * *. How many balls are there in each of the three kinds?