2. Repair a section of road. The full length 1/4 was repaired on the first day, and 90 meters was repaired on the second day. At this time, there is still150m to be repaired. How long is this road?
There is a pile of yellow sand on the construction site, which is 23% used and just 60 tons used. How many tons is this pile of yellow sand?
4. Sound travels in the air for about 3 seconds 1 km, and the speed of light is about 300,000 km per second. What is the speed of sound?
5. A wheat experimental field, originally planned to produce 8 tons of wheat per hectare, actually produced several tons of wheat per hectare?
6. The staff canteen planned to burn 5 tons of coal in April, but actually burned 4.8 tons. What percentage was saved?
7.4250 kg of flour can be ground with 5000 kg of wheat to get the flour yield of wheat.
8. Wheat flour yield is 80%. How many kilograms of wheat does it take to grind 640 kilograms of flour?
9. There are 50 students in Class 6 (1), and one day there are two students on leave, so what is the attendance rate that day?
10, arbor day * * * planted a number of trees, 485 trees survived, 15 trees did not survive. Seek the survival rate of this tree planting.
1 1. Miss Wang went to the sporting goods store and bought five small footballs. She paid 100 and got back 32.5. How much is each small football? 12. Two cars, A and B, leave from two places 255 kilometers apart at the same time. Car A travels 52 kilometers per hour and car B travels 57 kilometers per hour. A few hours later, the distance between the two cars is still 37 kilometers.
13, master and apprentice * * * processed 208 machine parts, and the number of parts processed by master was four times that of apprentice. How many parts did the master and apprentice process respectively?
14. Wang Fang's deposit is 2.2 times that of Li Li. If Lili deposits 75 yuan in the bank again, the deposits of the two people will be equal. How much did each of them save?
15, grade five, bought a batch of notebooks for three excellent students. If each student is awarded 5 copies, there are still 3 copies. If each person sends 6 copies, it will be less 12 copies. How many "three good" students did you choose in the fifth grade? How many notebooks did you buy?
16. There are 80 sheep on the hillside, among which the white sheep is four times that of the black sheep. How many black sheep and white sheep are there on the hillside?
17. Two baskets of oranges were sold in the shop. The first basket weighs 26 kilograms and the second basket weighs 29 kilograms. The second basket sold 9 yuan more than the first one. What is the average price of oranges? (Solve in two ways)
18, trapezoidal wheat field, covering an area of 540m2, height18m, upper bottom 20m, and lower bottom 20m?
19. Two cars, A and B, set off from two places 750 kilometers apart at the same time, face to face and meet in five hours. Car A travels 80 kilometers per hour, and how many kilometers does car B travel per hour?
20. Two cars leave from the same place at the same time. After driving for 4.5 hours, car A lags behind car B 13.5 km. It is known that car A travels 35 kilometers per hour. How many kilometers does bus B travel per hour?
2 1, the students went for a spring outing, and there were already 45 people in the car; There are still four groups waiting for the next bus, each with 9 people. How many people went for a spring outing?
22.A * * * There are 150 people going for a spring outing, and 54 people have already left. The rest will be transported by two cars. How many people can each car carry on average?
23. There are 18 boys in the dance team, and the number of girls is twice that of boys. How many boys and girls are there in the dance team?
24. The students made flowers, Xiaojun made 63 flowers, and Xiaohong made 18 fewer flowers than Xiaojun. How many flowers did they make together?
25. I bought 25kg Chinese cabbage for the first time and175kg Chinese cabbage in the canteen for the second time. How much does it cost to buy Chinese cabbage in the canteen at 6 cents per kilogram?
26. Xiaohua showed Xiaogang a book. Xiaohua read 132 pages in 4 days and Xiaogang read 96 pages in 3 days. Who reads fast? Why?
27. Mom bought three T-shirts for Xiaoming, each 23 yuan. She paid the shop assistant 100 yuan. How much should she get back?
28. Sporting goods stores used to have 72 basketballs, but they sold 60 and bought 45. How many basketballs are there now?
29. The students visited the Observatory. There are nine girls, and the number of boys is three times that of girls. Is a 40-seat car enough? 30. There are 24 boxes of chess in the school activity room. The number of boxes of military flags is twice that of chess, and there are 12 boxes of checkers. How many boxes are there less than the flag?
3 1. The school bought 80 boxes of white chalk and 20 boxes of red chalk, and used 60 boxes. How many boxes are left?
32. The teacher has 8 bags of table tennis, 6 in each bag, and lends them to classmates 15. How much is left?
33. The teacher spent 70 yuan on books and bought seven sets of story books, each of which cost 9 yuan. How much is left?
34. The clothing group had 90 meters of cloth, 63 meters of which were used, and the rest of the cloth was made into 9 sets of clothes. How many meters of cloth does each suit use on average?
There are 80 packets of instant noodles in the grocery store. I sold 26 bags in the morning and 34 bags in the afternoon. How many bags are left? (Answer in two ways)
36. A chemical fertilizer factory produced 365,438+00 tons of chemical fertilizer in January, 400 tons in February and 490 tons in March. How many tons of chemical fertilizer are produced on average every month?
37. A horse eats12kg of grass every day. According to this calculation, how many kilograms of grass can 25 horses eat a week? (two ways to calculate) 38. Master Wang and his apprentice make machine parts. Master Wang earns 45 pounds an hour, while his apprentice earns 28 pounds an hour. Master Wang works 6 hours and his apprentice works 8 hours. How many machine parts do they produce?
39. The factory has 8000 kilograms of coal, which was originally planned to burn for 25 days. Due to the improvement of the stove, it actually burned for 32 days. How many kilograms are saved on average every day compared with the original plan?
40. The site needs 1280 bags of cement, and eight carts are needed for all four transports. How many bags of fertilizer can a cart carry at a time? (calculated in two ways)
4 1. This farm tool factory produced 4650 farm tools in the first half of the year and 5382 farm tools in the second half. How many farm tools are produced on average every month throughout the year? 42. The garment processing department can use120m fabric to make 24 sets of adult uniforms and 30 sets of children's clothes. How many meters are used for each set of children's clothes less than adults?
43. A chicken farm sold12,300 chickens in April, and sold 200 fewer chickens in May than in April. How many chickens have you sold in two months?
44. A flour mill grinds 800 kilograms per hour. According to this calculation, how many kilograms of flour can six flour mills grind in five hours? (Answer in two ways)
45, a pile of coal ***800 tons, with five trucks, 16 times can be shipped out, how many tons per truck on average?
46. Cars travel 300 kilometers in six hours and trains travel 600 kilometers in six hours. How many kilometers does the train travel more than the car per hour?
47. During a week's time, the daily maximum temperatures measured by Xiangyang Primary School Meteorological Team were 3 1, 3 1, 34, 32, 33, 30 and 33 degrees respectively. What is the highest average temperature this week?
48. A factory originally planned to produce 4,800 farm tools a year, but actually completed the task in 10 month. How much more farm tools are actually produced each month than originally planned?
49. A machine can process 320 parts in 8 hours. According to this calculation, how many hours does it take to process 2000 parts with five machines?
50. A coal mine plans to produce 38,400 tons of coal in April. After technical transformation, the average daily output increased by 256 tons compared with the original plan. How many tons of coal was actually produced in April? (Calculated by 30 days)
5 1. A factory planned to use 10 tons of fuel this month, but actually used 1 more than planned. How many tons were actually used?
52. The distance between A and B is 270 kilometers. It takes six hours for the car to drive from A to B, and when it returns, the average speed is 30 kilometers per hour. Find the average speed of this bus round trip.
53. Mix 6 kilograms of fruit candy and 4 kilograms of milk candy, and the unit price per kilogram is 4.2 yuan.
54. It is known that fruit candy is 3 yuan per kilogram. What is the unit price of toffee?
55. A ship sails from place A to place B, sailing at an average speed of 36 kilometers per hour and arriving in 5 hours. It went well when I came back, and I returned to A from B in 4 hours. Find the average speed of the ship in kilometers.
56. The total length from A to B is120km. It takes two hours to get there by car, and when I come back, the speed is 20 kilometers slower than when I went. What is the average speed of this car?
57. The average age of father and mother is 38.5 years old, and the age of son is 13 years old. What is the average age of these three people in five years?
58. Six students from Class One, Grade Five took part in the math contest. The average score of five students is 78. With Oda's score, the average score is 80. What's ODA's score?
59. The distance between A and B is 75.6 kilometers. A car driving from a to b is downhill, with a speed of 33.6 kilometers per hour. Go uphill after coming back, with a speed of 25.2 kilometers per hour. How many hours does it take for this car to go back and forth?
60. How many square decimeters of glass does it take to make a goldfish bowl (without a cover) with a length of 12 decimeter, a width of 5 decimeters and a height of 8 decimeters? If the glass per square decimeter is 0. 8 yuan. How much is it?
6 1, Xinyi garment factory produces a batch of children's wear, which is scheduled to be completed in 30 days. Actually produce 150 sets every day, and finish the task five days ahead of schedule. How many sets were originally planned to be produced every day?
62. A truck and a bus leave from A and B at the same time. Trucks travel 40 kilometers per hour, and buses travel 2.5 times faster than trucks. Five hours later, two cars met. How many kilometers is it between A and B?
63. An elephant weighs 34.2 tons, and a whale weighs three times as much as an elephant and six times as much as a horse. How many tons does a horse weigh?
64. After sawing a 2-meter-long cuboid wood into two parts, the surface area increased by 20 square centimeters. Can you calculate the original volume of this piece of wood?
65. The floor of Xiaohua's living room is rectangular, 7.2 meters long and 3 meters wide. * * * How many pieces does it take to pave the floor with square granite with a side length of 6 minutes?
66. The total length of a train is 217m, and it passes a bridge with a length of 542.5m at a speed of15.5m per second. How many seconds does it take to get on the bridge from the front to the back?
67. A rectangular ground is 90 meters long and 15 meters wide. Trees should be planted around it and in its four corners. The distance between every two trees is equal. How many trees should be planted at least?
68. There are three thin iron wires with lengths of 120cm, 180cm and 300cm respectively. Now, we're going to cut them into equal sections, and we can't leave any of them. Each segment can be as long as () cm, and one * * * can be cut into () segments.
69. It is hoped that all the teachers and students in primary schools will participate in tree planting activities, including planting eucalyptus 1 tree, cypress 1 tree, pine 1 tree and 253 trees. I hope there are teachers and students in primary schools. ?
70. When physical education class, Class 3, Grade 5, was waiting in line in a school, the PE teacher found that when standing in two lines, there was 1 person at the end of the line. When lined up in three lines, there are two more people at the end of the line; When arranged in four rows, there were three more people; When arranged in five lines, there are four more people; There were five more people in six rows. How many people are there in this class?
7 1. A rectangular glass jar, measured from the inside, is 5 decimeters long and 3 decimeters wide. Existing water depth 1.5 decimeter. When a stone is immersed in water, the water depth is 2 decimeters. What is the volume of this stone?
72. A room is 8 meters long, 6 meters wide and 2.5 meters high. If the walls around the room are covered with wallpaper, how many square meters of wallpaper do you need * * excluding the area of doors and windows of 10 square meters? 3.5 yuan, how much is the wallpaper per square meter?
73. A factory planned to produce 400 TV sets in March, but actually produced 250 sets in the first half and 230 sets in the second half. What is the actual percentage of exceeding the plan?
74. At present, there are three water pipes, A, B and C. The water pipe flows out 20% of the salt water at a flow rate of 4g per second, B flows out 15% of the salt water at a flow rate of 6g per second, and C flows out water at a flow rate of 10g per second. C after opening, stop the flow for 2 seconds, then flow for 5 seconds, then stop the flow for 2 seconds, and then flow for 5 seconds. ...
75. There are 75 students in the painting and calligraphy class and 48 students in the dance class in Guangxin Primary School. What percentage of the students in the painting and calligraphy class are more than those in the dance class?
76. Xiaoming experimented with a bag of mung beans, of which 100 seeds germinated and 25 seeds did not germinate. Find the germination rate of this bag of mung beans.
77. After reading four pages, how much did you read the whole book the next day?
78. For the disaster area, Xiaohua donated 4.2 yuan, and 0.4 yuan more than Xiaoli. How much did Xiaohua donate more than Xiaoli?
79. A dress was sold at a 20% discount 100 yuan, which was actually sold in 90 yuan. What is the actual discount?
80. The canteen sent 600 Jin of rice, which has been eaten for four days, and 50 Jin a day. How many Jin do you eat every day for the remaining five days?
8 1.3 boxes of oranges are 24 kilograms less than 3 baskets of apples. On average, each box of oranges weighs 20 kilograms, and how many kilograms does each basket of apples weigh?
82. In the activity of collecting tree species for greening the motherland, 20 kilograms of tree species were collected by five classes in grade four and 60 kilograms by three classes in grade five in a school. How many kilograms of tree species were collected on average in each class?
83. A canal with a length of 2 100 meters was built in Da Qiao Town, which lasted for five days, with an average of 240 meters per day. The remaining tasks should be completed within 3 days. How many meters do you need to repair every day on average?
84. Xiaoming went to the store to buy three mini-soccer balls and gave them 20 yuan. He got back 1.85 yuan. How much is each football?
85. There are four teams in a class, each team 12 young pioneers. In the donation activity of "Project Hope", * * * donated 240 yuan. How much does each young pioneer donate on average?
86. Yucai Primary School bought two small soccer balls and 25 long ropes, which cost 408.5 yuan. The price of each small football is 48 yuan. What's the price of each long rope?
87. Wang Hua bought five copies of Interesting Mathematics and five copies of Story King, each of which was 20 yuan. How much is each copy of interesting mathematics, 2.6 yuan and Story King?
88. The motorcade has to transport 89 tons of goods, and the first three times each transport 10.5 tons. The rest will be shipped in five installments. How many tons per shipment on average?
89.4 Students play singles on the table tennis table for 60 minutes. How many minutes did each student play on average?
90. The average score of Chinese, mathematics and common sense in the final exam is 95, and the average score of Chinese and mathematics is 93. Q: How many points did you get in the common sense exam?
Class 9 1.5 (1) planted trees, with 6 trees for 26 boys and 5 trees for 24 girls. How many trees do boys and girls plant on average?
92. Dong Li bought stationery with 5 yuan money. He has spent 1.5 yuan to buy pencils, and the rest of the money is used to buy exercise books, each of which is 0.35 yuan. How many exercise books can he buy?
93. If a batch of apples are divided equally among the children in the kindergarten class, each person can get 6 apples; If it is divided equally among the children in the kindergarten class, each person can get 3; How much can each child get if it is divided equally between the big class and the small class?
94. Shixin Watch Factory originally planned to produce 75 watches every day, and completed the task in 12 days. It takes 10 days to actually complete the task. How many pieces are actually produced every day on average?
95. The experimental primary school carried out the activity of "planting potted flowers in environmental protection week". Plant 1 14 pots every day for the first three days, and plant 750 pots in the last four days. How many potted flowers are planted every day during "Environmental Protection Week"?
96. The remaining 7.5 hours need to be cultivated. How much farmland is plowed per hour on average?
97. A loom weaves105m in 7 hours. At this speed, how many meters can a loom weave in 8 hours?
98. A car travels for 3 hours 135 km. According to this calculation, how many kilometers do you drive in 8 hours?
99. 120 kg of soybean can squeeze out 16.2 kg of soybean oil, and how many kg of soybean oil can be squeezed out of 2000 kg of soybean? (Use proportional solution)
100. Two mills in a processing plant can grind 14.4 tons of flour in 3 hours. According to this calculation, how many tons of flour can six mills grind in 8 hours?
10 1.2 days later, how many days do you need to do the remaining b?
102. Team A completed a project in 15 days, and Team B completed a project in 12 days. Now, after four days of cooperation between Party A and Party B, the remaining projects will be completed by Team C within eight days. If the project is done by one person in Group C, how many days will it take to complete?
103. Now the two teams are cooperating. How many days can it be finished?
104. If two teams cooperate, how many days can it be completed?
105. The length of a highway1500m. It takes 15 days to repair A alone and 10 days to repair B. How many days does it take for the two teams to repair together?
107.A It takes 8 days to finish a job alone, and B's work efficiency is twice that of A. How many days does it take for two people to finish the job together?
108. The master and the apprentice * * * finished a job together, and the apprentice finished it in 20 days, 4 days more than the master. How many days will it take to cooperate with mentoring?
1 10. It takes 10 days for Party A to do a job alone, and 15 days for Party B to do a job alone. How many days can Party A and Party B cooperate to complete 80% of the work?
1 165438+ If it takes 5 minutes, what should be the average speed of Zhang Ming's cycling?
1 12. Xiaoming walks from home to school for 35 minutes and rides a bike 10 minutes. He walked from home by bike for 8 minutes, and his bike broke down, so he walked instead. How many minutes did Xiao Ming spend from home to school?
1 13. It takes Zhang Hua 15 minutes to walk from home to school and 5 minutes to ride a bike. He started from home by bike. Three minutes later, his car broke down and he walked instead. How many minutes did it take him to go to school on foot?
114. the distance between a and b is 240 kilometers. A car travels 80 kilometers from A to B in two hours. According to this calculation, how many hours does the whole journey take?
1 15.A train goes from place a to place b at a speed of 50 kilometers per hour and arrives in 6 hours; When you return, you can go forward at a speed of 60 kilometers per hour. How many hours can you arrive?
1 16. The railway from city A to city B is 760 kilometers long, and a train travels 285 kilometers in three hours. According to this calculation, how many hours does it take from city A to city B? (Two ways to solve, one of which is proportion)
1 17. The scientific research ship plans to travel at a speed of 25 kilometers per hour, and will arrive at the scheduled sea area for scientific experiments after 48 hours. How many kilometers per hour do you need to drive if you want to arrive 8 hours in advance?
1 18. Two trains leave from two places 432 kilometers apart at the same time and meet four hours later. The express train runs 60 kilometers per hour. How many kilometers does the local train travel per hour? (Solving equations) (dangyang city, Hubei)
1 19.A and B started from two places 520 kilometers apart at the same time and met for 5 hours. As we all know, car A travels 6 kilometers more per hour than car B. How many kilometers do A and B run per hour? (Shanghai)
Kilometers, how many kilometers per hour is the B train? (Landslide Road Primary School, Jianghan District, Wuhan)
12 1.A and B trains leave from A and B respectively at the same time. Six hours after the two cars meet, they continue to drive at the original speed. Four hours later, a car arrives at B. It is known that A car travels more than B car per hour 12km. How many kilometers does A car travel per hour?
122. A freight train leaves from place A to place B at 6 am, with an average speed of 45 kilometers per hour. A passenger train departs from B to A, with an average speed of15km. As we all know, passenger trains leave two hours later than freight trains. At noon 12, two trains pass a station on the way at the same time, and then move on. How many kilometers is the freight train from B when the passenger train arrives at A? (Nanchang Foreign Language School)
123. The students visited the exhibition hall. Some students ride bicycles, and their speed is 24 kilometers per hour. Some students walk at a speed of 6 kilometers per hour. Starting from the school at the same time, 15 minutes later, students riding bicycles arrive at the exhibition hall. How far is the walking classmate from the exhibition hall?
124. Two cars, A and B, leave from two places at the same time. When they met, the distance between A's car shop and B's was better.
125.A train and B train leave from point A in different directions at the same time. Four hours later, car B arrived at point C. At this time, car A traveled 30 kilometers more than car B. It is known that car A can circle the rectangular ring in seven hours. How many kilometers is this ring road?
126. Party A and Party B race around the circular track, and they walk in the same direction from point A at the same time. The ratio of the first section is 4∶5, and the total length of this circular runway is obtained.
127. Two cars leave from Party A and Party B at the same time. It is known that a car travels 70 kilometers per hour?
128. Buses and trucks leave from A and B at the same time. It takes 10 hour for the bus to travel completely, and the truck travels 42 kilometers per hour. After 3 hours, the sum of the distances traveled by the two cars is equal to the remaining distance. How many kilometers is it between A and B?
129. Two trains, A and B, leave from two stations in opposite directions at the same time. The average speed of train A is 90 kilometers per hour. What is the distance? 130. On a pedestrian street, the distance between A and B is 600 meters. Zhang Hua walks 4 kilometers per hour and Wang Wei walks 5 kilometers per hour. At 8 o'clock, the two of them set off from A and B at the same time and walked in opposite directions. 1 minute later, they turned around and walked in the opposite direction. After another 3 minutes, they turned around and walked in turn according to 1, 3, 5, 7 ... (consecutive odd numbers) minutes. So when did Zhang Hua and Wang Wei meet at eight o'clock? (School of Foreign Languages, Wuhan University)
13 1. From place A to place B, it takes 6 hours for car A and 10 hours for car B. Two cars leave from place A to place B at the same time, and car A returns immediately after arriving at place B. How many hours after the two cars leave? (Songzi County, Hubei Province)
132. the distance between a and b is 2 10 km. Can a car and b car meet at the same time from a and b respectively? (Qingshan District, Wuhan)
If two cars drive from both ends of this expressway at the same time, how many hours will it take to meet? (Shouchun School in Hefei Central District)
How many square bricks do you need to lay the floor? (Fujian Xiao Yun Experimental Primary School)
135. A cylindrical measuring cup with an inner diameter of 8 cm and an inner height of 16 cm.
136. A cylindrical iron drum without a cover is 24 cm high and the bottom radius is 10 cm. How many square centimeters does it take to make this bucket? (Keep the whole hundred square centimeters) (Central District of Xining City)
137. A wooden box is 9 cm long, 6 cm wide and 4 cm high. How many square meters of boards do you need to make 10 wooden box (with cover)? (Shangyu City, Zhejiang Province)
138. A cylindrical grain depot filled with wheat, with a bottom area of 3.5 square meters and a height of 1.8 meters. If the wheat is piled high.
What is the area of 139? M-cone wheat pile? How many cubic decimeters is the volume of an object?
140. A cylindrical barrel with a bottom diameter and a height of 6 decimeters. How many cubic decimeters of water can this barrel hold?
14 1. A rectangular swimming pool, 50 meters long, 25 meters wide and 2 meters deep.
142. A garment factory received the task of producing 1200 shirts, and completed 40% in the first three days. According to this calculation, how many days will it take to complete the task? (Write two different solutions) (Shouchun School in Hefei Central District)
143. An engineering team wants to pave an expressway, which has been paved for 2.8 kilometers in the first 20 days. According to this calculation, how many days will it take to pave the remaining 4.2 kilometers? (Solving by Proportional Method) (Linhai City, Zhejiang Province)
144. Harvest Farm Tools Factory produces a batch of sickles. It was originally planned to manufacture 360 pieces every day, which was completed in 18 days. In fact, there are 72 more every day. According to this calculation, how many days will it take to complete the task? (Qingshan District, Wuhan)
145. Changfeng electric fan factory plans to produce 2800 electric fans. 672 units have been produced in the first six days. According to this calculation, how many days will it take to complete the task? (baixia district, Nanjing)
146. The school-run factory of Yumin Primary School originally planned to bind 2 1600 exercise books every day, and actually bound 360 more exercise books every day than originally planned. How many days did it take to actually complete the production task? (Hongqiao District, Tianjin)
147. Xiaoqing reads a 260-page story book. She read 20 pages a day for the first three days. If the rest read 25 pages a day, how many days will it take? (Chengzhong District, Xining City)
148. The school bought 342 meters of plastic rope for short skipping. First cut five pieces of the same length, and take 9 meters for each piece. According to this calculation, how many plastic ropes can be used for short skipping? (Gulou District, Nanjing)
149. The unit price of two baskets of apples is the same. The apples in basket A weigh 64kg, and those in basket B weigh 48kg. After the two baskets are sold out, the remaining apples weigh the same. It is known that Basket B sells less 56 yuan than Basket A. How much can Basket A sell? (Shouchun School in Hefei Central District)
150. Shixin Watch Factory originally planned to produce 1000 watches in 25 days, but actually produced 50 watches every day. How many days did it actually finish the task ahead of schedule? (Kaifeng City, Henan Province)
15 1. The TV factory planned to produce 1200 TV sets in 30 days, but in fact, it produced 10 more TV sets every day than planned. How many days did it actually complete the task? (Dongyang City, Zhejiang Province)
152. The clothing factory wants to process a batch of school uniforms. It was originally planned to produce 250 sets per day, which can be completed in 30 days. In fact, it produces 300 sets every day. Actually, it will take a few days to finish. (Answer in proportion) (Jingdezhen City, Jiangxi Province)
153. A batch of goods was originally planned to be transported every day 18 tons, and it will be shipped in 84 days. Actually, it will transport 2 1 ton every day. How many days will it actually take to deliver the goods? (Solved in proportion) (Yinchuan No.21 Primary School)
154. The assembly group will assemble a batch of washing machines. It is planned to assemble 27 washing machines every day and complete the task in 20 days. Actually, 30 sets are assembled every day, and it only takes a few days to complete the task. (Beitang District, Wuxi City, Jiangsu Province)
155. Daqing primary school canteen has issued 24 tons of coal, and it is planned to burn for 50 days. Actually saving 0.08 tons per day, how many days did it actually burn? (Yueqing City, Zhejiang Province)
156. The workshop produces a batch of parts, and 65 sets are produced every day. After 12 days of production, there is still a shortage of 130 sets. How many sets of parts are there in this batch? (Landslide Road Primary School, Jianghan District, Wuhan)
157. I hope the primary school will decorate the multimedia classroom. It is planned to use glazed square bricks with a side length of 30 cm to pave the floor, which needs 900 pieces. How many pieces do you actually need to use square marble with a side length of 50 cm to pave the floor? (Answer with proportional knowledge) (donghu district, Nanchang)
158. bind a batch of identical exercise books. It was originally planned that each book should contain 16 pages, and 250 copies can be bound. If 200 books are bound, how many pages should each book have? (Proportional solution) (Guilin, Guangxi)
159. 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 suits can you make with the saved cloth? (Shanghai Changqing School)
160. The master processed 192 parts more than the apprentice. It is known that the number of parts processed by the master is four times that of the apprentice. How many parts do the master and the apprentice each process? (Equation Solving) (Yinchuan No.21 Primary School)
16 1. Hong Guang farm tools factory produced 600 farm tools in May, 25% more than in April. How many farm tools did it produce in April? (Qingshan District, Wuhan)
162. Red Star Textile Factory has 174 female employees, which is 6-3 times less than the number of male employees. How many employees are there in the factory? (Shaoxing County, Zhejiang Province)
Second solution) (Yinchuan experimental primary school)
163. There are 86 students in the third grade of Baylor Primary School, 4 less than those in the second grade. How many students are there in Grade Two? (Changsha Experimental Primary School)
164. There are 630 boys in one school, with a ratio of 7: 8. How many girls are there in this school? (Shangcheng District, Hangzhou)
165. Zhang Hua read a story book. On the first day, 15% of the books were missing 4 pages. At this time, the ratio of read pages to remaining pages is 1: 7. How many pages does this story book have? (Pingyang County, Zhejiang Province)
166. A bookshelf has two floors, and the books on the upper floor are three times as large as those on the lower floor; If you take 30 books from the upper floor and put them on the lower floor, the number of books on the two floors is exactly the same. How many books are there on each shelf? (Hongkou District, Shanghai)
167. There are 89 books on the first floor, less than on the second floor 16. The number of books on the third shelf is 65438+ 0.5 times of the sum of the first and second floors. How many books are there on the third floor? (Nanchang qingyunpu district)
168. The ratio of the number of art books to the number of other two books is 1: 5, and the number of reference books and literature books is 180. How many books are there in the bookcase? (Wuxi City, Jiangsu Province)
169. There are two students, A and B. After each student donated 15 yuan to the people in the disaster area, the ratio of the remaining money A to B is 3: 4. B how much money did you save? (Jingdezhen City, Jiangxi Province)
170. Xiaohong and Xiao Fang both saved some pocket money. The ratio of their savings is 5: 3. In the donation activity of "supporting the disaster area", Xiaohong donated 26 yuan and Xiao Fang donated 10 yuan, and the remaining money was equal. How much money does Xiaohong have? (Qingshan District, Wuhan)
Hope to adopt!