1, 6.25 yuan for a math book and 5.86 yuan for a Chinese book. Two books and one * * *, how much is it?
2. A watermelon weighs 4.86 kg and a cantaloupe weighs 3.5 kg. How many kilograms is a watermelon heavier than a cantaloupe?
One-step multiplication and division of two decimal places 1 a kind of wool is 48.36 yuan per kilogram. How much is 3 kilos? Buy 0.6 kg?
2. A professional sericulture group raises 2 1 spring silkworm and one * * * produces1.24kg cocoon. How many kilograms of cocoons are produced per piece on average?
Three, three two-step calculation application problems with known conditions 1, Xiaohong read a story book for five days, reading 12 pages every day, but didn't read 38 pages. How many pages are there in this book? (Draw a line segment)
3 bags of flour and 3 bags of rice in the canteen. Flour is 25 kg per bag and rice is 50 kg per bag. How many kilograms of flour and rice are shipped?
3. The militia targeted the target, using 250 bullets for the first time, 320 bullets for the second time, and the third time was less than the sum of the previous two times 180 bullets. How many bullets were used for the third time?
Four, two-step calculation application problems under two known conditions
1. The school bought 45 boxes of colored chalk, and white chalk bought more than colored chalk 15 boxes. How many boxes of chalk do I buy?
2. An empty basket weighs 2kg, and there are 32kg peanuts in it. How many times the weight of the basket containing peanuts is that of the empty basket?
The Application of verb (Verb Abbreviation) Multiplication
1. The grain store sent two truckloads of flour, each with 80 bags of 25 kilograms. How many kilograms of flour did this grain shop send? (Answer in two ways)
2. Junior three students go to the vegetable garden to collect cabbages, which are divided into four groups, each group 1 1 person, with an average of 45kg per person. A * * * How many kilograms of cabbage?
1. The chemical fertilizer plant plans to produce 7,200 tons of chemical fertilizer, which has been produced for four months, with an average of 1200 tons of chemical fertilizer per month, leaving 800 tons per month. How many months will it take to complete the production?
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.
Exercises of Mathematics Application in Grade Five (2)
Category: Name: Result:
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 speed of motorcycle is 98km/h and that of truck is 80km/h.. Try:
(1) Time ratio of motorcycles and trucks;
(2) The ratio of driving distance between motorcycle and truck;
(3) The ratio of motorcycle speed to truck speed.
A car traveled 280 kilometers from A to B, 500 kilometers away. Find the ratio of the distance traveled to the remaining distance.
3 A project is completed by team A alone 10 days, and team B alone for 8 days. What is the work efficiency ratio between Team A and Team B?
There are 40 students in Class 5 (1), of whom 32 have reached the standard in physical exercise, and what percentage of students in the class have failed to meet the standard (that is, failed rate)?
Xiao Li, Xiao Zhao and Xiao Wang make a batch of parts together. After completion, Xiao Li counts the total, Xiao Zhao counts the total, and Xiao Wang counts the total. Find the ratio of the number of parts made by three people.
In the first math exam of Class 5 (1), 48 students passed and 2 failed. Seek the passing rate of this math exam.
On a certain day, there were 38 people in a workshop, and two people were absent, so they asked for attendance.
A factory completed 56% of the planned output in the first half and 64% in the second half. What percentage has it increased this month?
9 A set of self-study books, now the unit price is 160 yuan, which is lower than the original price. What's the current rate, 40 yuan?
10 Young Pioneers Greening Group planted 360 trees in spring and 440 trees in autumn, and 760 trees survived, so as to seek the survival rate of saplings.
1 1 mooncake factory produced 140 tons of mooncakes last year, and this year it produced 2 10 tons of mooncakes, an increase of one percentage point over last year?
12 6 kg is more than 5 kg? How much is 5 kg less than 6 kg?
13 A factory completed 56% of the planned output in the first half and 64% in the second half. What percentage has it increased this month?
14 garment factory plans to produce garments in the second half of the year, which is 20% higher than that in the first half. What percentage is it in the second half of the year?
15. The oil yield of rapeseed is 38%. How many tons of oil can 5 tons of rapeseed process?
16. It is planned to invest 5 million yuan to build a waterworks, which actually saves 5% compared with the plan. How many million yuan was saved?
17. The oil yield of rapeseed reached 85%. Qinfen Village planted 8 hectares of rapeseed, and harvested 3,750 kilograms of rapeseed per hectare. * * * How many Jin of rapeseed can you produce?
18. There are 200 sixth-grade students in Xinzhuang Primary School, of whom 120 participated in interest groups. How many more people need to participate in order to make the number of people attending the interest class reach 88%?
19. There are 65438+ 10,000 broilers in the chicken farm. I sold it for the first time and 25% for the second time. How many thousands are left?
20. Weight of a pile of coal 120 tons. Remove 20% of the total weight on the first day and 25% of the total weight on the second day. How many tons are left?
2 1. A car used to use 12 liters of gasoline per hour, but it saved 10% after it was repaired. How many liters of gasoline does this car use per hour now?
22. Grade four students in a primary school 120, and grade five is less than grade four 10%. How many students are there in Grade Five?
Cars travel 24 kilometers per hour, and motorcycles are 70% faster than cars. How many kilometers does the motorcycle travel per hour?
In the first month, an expressway was built, and in the second month, 6 kilometers were built, with 37.5% not repaired. What is the total length of this highway?
A factory produces a batch of parts, 40 pieces on the first day, the second day is more than the first day 10%, and the output in two days accounts for 25% of the total. How many pieces are there in this batch?
Car A traveled 72 kilometers from City A to City B, leaving 62.5% of the whole journey. How many kilometers does this bus need to travel to B city?
Two cars, A and B, leave from two places at the same time. When the first car travels 60% of the whole journey and the second car travels 75% of the whole journey, the distance between the two cars is 140 km. How many kilometers are the two places apart? How many kilometers does car A travel less than car B?
28 Qingfeng Store delivers 1620 Jin of oranges and pears, and the pears delivered are 80% of oranges. How many kilograms of oranges and pears were delivered? .
The oil yield of rapeseed is 38%. How many tons of oil can 5 tons of rapeseed process?
It is planned to invest 5 million yuan to build a waterworks, which is actually 5% less than planned. How much money have you saved?
31195, the national industrial and commercial tax revenue was 538.3 billion yuan,196 increased 105 1 billion yuan. Compared with 1995, what is the growth percentage of 1996?
1. Xinhua Bookstore delivered 5250 literature and science books to the countryside. There are 25 packages of literature books and 80 packages of science and technology books, the number of which is equal for each Bao Shu. How many books are there in each package? How many books are there in science and technology and literature and art respectively?
2. A grain store sells 50 bags of flour in the morning and 30 bags of flour in the afternoon, each with the same weight, and sells 1600 kg more flour in the morning than in the afternoon. How many kilograms does each bag of flour weigh? How many kilograms of flour do you sell in the morning and afternoon?
3. The first truck delivered 80 packages of cement, and the second truck delivered 65 packages of cement, which was less than the first truck 1.5 tons. How many tons of cement were transported by two trucks?
A fruit shop has two baskets of apples with the same unit price. The first basket weighs 45 kg, the second basket weighs 39 kg, and the second basket sells less than the first basket 15 yuan. How much are these two baskets of apples worth? How much are two baskets of apples worth?
5. Huafeng fruit is booming, with 840 kilograms more pears than oranges, and the weight of pears is 1.5 times that of oranges. How many kilograms do oranges and pears weigh?
6. The garment factory has 156 workers, among whom the number of female workers is three times that of male workers. How many male and female workers are there?
7. The weight of two packages of relief goods is 154kg, of which the first package is twice as small as the second package, and it is 14kg. What is the weight of two packages of relief goods?
8. There is rice and flour in the warehouse. It is known that the stored flour is 4500 kilograms more than rice, and the stored flour is three times more than rice, 700 kilograms. How many kilograms of rice and flour are stored in the warehouse?
9. Mingming went to buy clothes on Sunday and spent 175 yuan to buy a suit. It is known that coats are more expensive than trousers 15 yuan. How much are the coat and trousers?
10, the circumference of the rectangle is 55 cm, and the known length is 3.5 cm longer than the width. What is the length and width of this rectangle?
There are 523 teachers and students participating in tree planting in the whole school. If 70 people are divided into groups, they can be divided into several groups at most.
2. Enter a 466-word article by computer. Red can input 60 words per minute, and Congcong can finish it in 7 minutes. Who can get into it faster?
3. Uncle Wang's orchard harvested 358 Jin of apples, 270 Jin of pears and 0/96 Jin of plums. Apples are 40kg per box, pears are 30kg per box and plums are 20kg per box. Calculate: How many cartons do you need for each of these fruits?
4. Plant trees along the road with a length of 180m, and plant a tree every 20m. How many trees does a * * * need to plant?
Is 5.260 yuan enough for eight of us to buy tickets (how many ways can you figure out)?
6. The car travels at18m per second, with a length of18m and a tunnel length of 324m. How long does it take for this car to pass through the tunnel?
7. Chunguang Grain and Oil Company wants to export 680 tons of grain. How many containers do you need if you use 22-ton containers? If 17 ton container is used, how many containers are needed?
8. The length of the highway from Shijiazhuang to Chengde is 546 kilometers. If Hongjia drives from Shijiazhuang to Chengde to visit the summer resort, if it drives 78 kilometers per hour on average and leaves at 8 am, when will it arrive?
9. A rectangular vegetable field is 9 meters long and 6 meters wide. This vegetable field receives 972 kilograms of vegetables. How many Jin of vegetables do you collect per square meter on average?
10, Shanghai Oriental Pearl TV Tower is the tallest TV tower in Asia, with a height of 468 meters. The first floor 12 floor is 39 meters high. The height of the TV tower is equivalent to the height of several 12-story residential buildings.
1 1, Grandpa Wang's four cows produce 896 kilograms of milk every week. 1 How much milk does a cow produce on average every day?
12, four vehicles transport 960 bags of cement in three times. How many bags of cement are transported on average each time?
13, (1) There are three windows in each classroom of Shui Bo Primary School, and each window is equipped with 12 pieces of glass. How many pieces of glass have been installed in nine classrooms?
(2) Liu Yang Primary School has 12 classrooms, each classroom has 3 windows, and each classroom is equipped with 324 pieces of glass. How many pieces of glass are installed in each window on average?
14, Xiaohong bought two boxes of mung bean cakes, each box 1 kg. 20 tablets per box, how many grams does each tablet weigh on average?
15, the first bus leaves from Zhang Cun. If you drive at 60 kilometers per hour, you can reach Lizhuang in 4 hours. It only takes three hours to get there. How many kilometers does this bus actually travel per hour on average?
At 16, Baita Village plans to build a canal. If the construction is carried out at16m per day, it will be completed in 18 days. It was built to 24 meters on the first day. According to the progress of the first day, it will be completed in a few days.
17, Hong Guang Hotel bought 100 towels, each 6 yuan. How many towels can I buy if I buy a towel with this money of 8 yuan?
18, a pack of A4 copy paper, 25 sheets a day, used up in 20 days. If you use less than five cards a day, how many days can you use them?
19, a professional beekeeper, raised 24 boxes of bees this year. Last year, 5 boxes of bees brewed 375 kilograms of honey. According to last year's honey output, how many Jin of honey can be brewed this year?
20. Dongdongjia raised 135 trees on 15 square meters of land. According to this calculation, how much land is needed to raise 990 trees?
2 1, Hongshicun Primary School is divided into 6 groups, with 4 people in each group and 360 trees in each group. How many trees did everyone water on average?
There are three times as many eggs in the box as in the basket. There are 96 eggs in a box. How many eggs are there in six baskets?
23. The average speed of a train before speeding up is 7 1km, and it takes 12 hours to get from Qinhuangdao to Handan. After speeding up, the average speed is 95 kilometers per hour. After speeding up, it will take several hours to drive from Qinhuangdao to Handan.
24. Aunt Wang is an expert in making children's clothes. She can make 75 sets of children's clothes a week. Now the working week is five days. (1) According to this calculation, how many sets can she make in 15 days?
(2) How many days does it take to make 120 sets of children's clothes?
25. The coach from Beijing to Qingdao passes through Tianjin and Jinan. Left Beijing at 6:30 in the morning, with an average speed of 85 kilometers per hour. When does it arrive in Qingdao?
Beijing to Tianjin137 km; 360km from Tianjin to Jinan and 393 km from Jinan to Qingdao.
26. Sunshine Primary School has 960 teachers and students. In June, * * * used 60 tons. (1) How many tons of water does the school use on average every day?
(2) According to this calculation, how many people can use 1 ton of water for one day? How about a month?
27, 125 male students and 1 19 female students were led by three teachers to visit the history museum. During the visit, they can only enter in batches, with a maximum of 50 people allowed at a time. After calculation, they should be divided into at least several batches.
28. A story book has 448 pages. It took Yao Ming 16 days to read it. Fangfang reads four pages more than Yao Ming every day. How many pages does Fangfang read every day?
In order to carry out sports activities in the class, the class pays for playing basketball and volleyball. It is known that it takes 16 1 yuan to buy three basketballs and two volleyballs. If it costs 245 yuan to buy three basketballs and five volleyballs, how much is a basketball and a volleyball?
30. Mingming is a child who loves learning. He does some oral arithmetic problems every day except Sunday. If he does 300 words a week, (1) how many words can he do in three weeks?
(2)650 questions can be completed in a few days.
3 1, a tit can eat about 800 pests in 5 days. According to this calculation, how many pests can a titmouse eat in a month? A month is 30 days. )
32. A bus travels for 3 hours 174 km. At this speed, how many kilometers can 12 hour travel?
Grandpa Zhang bought three lambs and spent 75 yuan. He wants to buy five more lambs. How much will it cost?
34, 5 boxes of bees can brew 375 kilograms of honey a year. Kobayashi keeps 12 boxes of such bees. How many Jin of honey can you brew a year?
35. Yu Ying Primary School 180 Young Pioneers helped military families to do good deeds on "Love Day". These young pioneers are divided into five teams on average, and each team is divided into four groups. How many young pioneers are there in each group on average?
36. Uncle Liu took 700 yuan to buy fertilizer, bought 16 bags of fertilizer, and left 60 yuan. What's the price of each bag of fertilizer?
37. Eggs collected at Chunya Chicken Farm on Monday were packed in a box of 18kg. After 8 cases are packed, there is 16kg left. How many kilograms of eggs were collected on Monday?
38. Uncle Wang drove from the county seat to Wangzhuang to deliver fertilizer. I walked 40 kilometers per hour for three hours when I went there, and only two hours when I came back. How many kilometers per hour did you average when you came back?
39. A long-distance bus traveled in the plains and mountains for two hours and finally reached the top of the mountain. It is known that tourist buses travel 50 kilometers per hour in plain areas and 30 kilometers per hour in mountainous areas. How long will this trip take?
40. The school should add two new books to the library, each with three sets. It is known that each set of children's encyclopedias 125 yuan, and each set of mathematical conjectures 18 yuan. * * * How much?
4 1. The school is going to distribute exercise books to class 15, with 44 copies for each class15, and 40 copies for standby. How many exercise books should schools buy?
42, a tree seedling 16 yuan, buy 3 trees to get 1 tree. How much cheaper is it to buy three at a time?
43. Shampoo per bottle 15 yuan. The mall will carry out promotional activities. Buy 2 bottles and get 1 bottle. Buy two bottles at a time. How much cheaper is each bottle?
44, a bunch of flowers 20 yuan, buy four 1. Aunt Li buys 4 bundles at a time. How much cheaper is each bundle?
45. Beijing Road Primary School plans to buy some desks and chairs. With this money, you can buy 80 tables and 240 chairs. How many sets of tables and chairs can I buy with this money?
46. Pour 3 cups of water into an empty bottle, which weighs 650g. If you pour 5 glasses of water, the bottle weighs 850 grams. If you pour 1 glass of water, how many grams does the bottle weigh?
1. Numbers written directly (4 points)
0.7×0.9=
2÷0.0 1=
8.2-2.8=
1÷0.25×4=
3.9÷3=
1 1.2+0÷6=
3.9+4.3=
10-4×2.5=
2. Solve the equation (12 points)
①6×3-2χ=5
②6χ-35= 13
③ 12χ-9χ=8.7
④90×(χ-2)=36
3. The off-type calculation can be simplified if it can be simplified. (12)
①5.4×3.08+3.6×3.08+3.08
②0.25× 1.9×40
③〔(6. 1-4.6)×0.8- 1〕×0.4
④6.3+0.84+3.7+8. 16
1. Xinhua farm has built a 7.5-kilometer-long canal, which has been built for 4 days, with a daily repair of 0.65 kilometers, and the remaining 7 days will be completed. How many kilometers are repaired on average every day?
Li Shifu made 20 parts in 4 hours. How many parts are manufactured per hour on average? How many hours does it take to make a zero average?
The road team built a road. It is planned to repair 0. 15km every day, and 12 days can be completed. If it is to be completed two days ahead of schedule, how many kilometers will it take to repair it every day on average? (column equation solution)
A rectangular paddy field, 80 meters long and 55 meters wide. The rice yield per square meter is 1.05 kg. How many tons of rice can this field produce?
Master Zhang produced 28 parts in 3.5 hours. According to this calculation, how many hours will it take to produce 140 parts?
Four, calculation (39 points)
1, write 6 points directly.
3.2×0.5=
χ+χ+χ=
2. 1÷0.3= 3.6÷0.09=
7α-0.2α+α=
0.7 14×8=
2.5- 1.37=
1.25×8=
9.9× 10 1=
χ×χ=
2χ-0.8χ=
0.75χ+0.5χ=
2, column vertical calculation (12 points)
0.73×2. 15
7.38÷ 1.6
(Keep two decimal places)
(checking calculation)
25.43÷ 15
1÷3
(Keep two decimal places)
(expressed in cyclic decimals)
3. Calculation can be simplified. (9 points)
102×4.5 13.8 1÷0.25÷4 9.9×4.05
0. 15×4×0.25
4, solve the equation (12 points)
7χ-2×9=80
7+5χ=42
100-2X=
13χ-7.5χ= 18.7
(χ+ 12)×6= 108
180÷X= 12
1, the distance between the two stops is 396 kilometers, and a bus and a truck leave the two stops at the same time. Three hours have passed, and the distance between the two cars is still 42 kilometers. It is known that the speed of passenger cars is 62 kilometers per hour, and how many kilometers per hour is the truck? (Equation solving)
The fruit shop delivered 340 kilograms of bananas, 80 kilograms less than apples. How many kilograms of apples were delivered? (Equation solving)
3. A truck can transport up to 405 tons at a time, with 2,000 tons of goods. How many times can this truck transport at least?
Xiaohua bought socks, paid 40 yuan and took 7.5 yuan back. How many pairs of socks did she buy for each pair of 6.5 yuan?
5.50 square meters trapezoidal city wall, 2.5 meters high, with upper bottom 17.3 meters and lower bottom 17.3 meters.
6. Use a rectangular HongLing 4.2 meters long and 2.8 meters wide. How many sides can an isosceles triangle with a right angle of 28 cm be cut at most?
Two. Calculation (32 points)
1, write the number directly (6 points)
1-0.6+0.4= 4.8÷0.02= 1÷0.0 1×3.8=
1.5×0.02= 7.89+0.8-7.89+0.8= 6÷0.5×2=
2, solve the equation (6 points)
18-2.5x= 13 (write check process) 9.5x-5x=27
3, vertical calculation and checking (8 points)
5.06-3.49 3.48÷2.4
4. Off-type calculation (simple and convenient) (4 points for each question is 12 points)
2.3×36+63×2.3+2.3 ( 190-56.4÷0.3)×0.45
5, column calculation (4 points per question, 8 points)
The average of the two numbers is 7.8, and the third number is 9.9. What is the average of these three numbers?
2.5 times of a number is more than 0.9 times of 18. Did you find this number? (column equation solution)
1. The highway maintenance team plans to build 2.88 kilometers of roads. Repair 0.4 km every day for the first 3 days, and the rest are required to be completed in 4 days. How many meters are repaired on average every day?
2. Haihong Primary School has 10 12 students, and the number of boys is 1.2 times that of girls. How many more boys than girls?
3. Hengfeng Grain Store used to have 60 bags of rice, each weighing 1.5 tons. Now I buy the same 18 bags of rice from other places. How many Jin of rice has been in this grain shop?
4. Two cars, Party A and Party B, drive in opposite directions from City A at the same time. A car travels 55.5 kilometers per hour, and B car travels 34.5 kilometers per hour. A few hours later, the two cars were 270 kilometers apart.
5. Xiao Rong walked three times on the 40-meter straight road, taking 83 steps, 78 steps and 79 steps respectively. She walks 450 steps from home to school. How far is her home from school?
6. Hongfeng Toy Factory originally planned to produce 450 dolls every day, and the task could be completed in 20 days. In fact, more than 50 are produced every day. How many days can you actually complete the task?
3 1.50+ 160÷40 (58+370)÷(64-45)
32. 120- 144÷ 18+35
33.347+45×2-4 160÷52
34(58+37)÷(64-9×5)
35.95÷(64-45)
36. 178- 145÷5×6+42 420+580-64×2 1÷28
37.8 12-700÷(9+3 1× 1 1) ( 136+64)×(65-345÷23)
38.85+ 14×( 14+208÷26)
23) 1.2×2.5+0.8×2.5
24) 8.9× 1.25-0.9× 1.25
25) 12.5×7.4×0.8
26) 9.9×6.4-(2.5+0.24)
(27) 6.5×9.5+6.5×0.5
0.35× 1.6+0.35×3.4
6.72-3.28- 1.72
0.45+6.37+4.55
5.4+6.9×3-(25-2.5)2×4 1846-620-380
4.8×46+4.8×54
0.8+0.8×2.5
1.25×3.6×8×2.5- 12.5×2.4
28× 12.5- 12.5×20
23.65-(3.07+3.65)
(4+0.4×0.25)8×7× 1.25
1.65×99+ 1.65
27.85-(7.85+3.4)
48× 1.25+50× 1.25×0.2×8
7.8×9.9+0.78
( 10 10+309+4+68 1+6)× 12
3×9 146×782×6×854
5. 15×7/8+6. 1-0.60625
39.(284+ 16)×(5 12-8208÷ 18)
40. 120-36×4÷ 18+35
4 1.(58+37)÷(64-9×5)
42.(6.8-6.8×0.55)÷8.5
43.0. 12× 4.8÷0. 12×4.8
44.(3.2× 1.5+2.5)÷ 1.6 (2)3.2×( 1.5+2.5)÷ 1.6
45.6- 1.6÷4= 5.38+7.85-5.37=
46.7.2÷0.8- 1.2×5= 6- 1. 19×3-0.43=
47.6.5×(4.8- 1.2×4)= 0.68× 1.9+0.32× 1.9
48. 10. 15- 10.75×0.4-5.7
49.5.8×(3.87-0. 13)+4.2×3.74
50.32.52-(6+9.728÷3.2)×2.5
5 1.[(7. 1-5.6)×0.9- 1. 15] ÷2.5
52.5.4÷[2.6×(3.7-2.9)+0.62]
53. 12×6÷( 12-7.2)-6 (4) 12×6÷7.2-6
102×4.5
7.8×6.9+2.2×6.9
5.6×0.25
8×(20- 1.25)
1) 127+352+73+44 (2)89+276+ 135+33
( 1)25+7 1+75+29 +88 (2)243+89+ 1 1 1+57
9405-2940÷28×2 1
920- 1680÷40÷7
690+47×52-398
148+3328÷64-75
360×24÷32+730
2 100-94+48×54
5 1+(2304-2042)×23
42 15+(436 1-7 16)÷8 1
(247+ 18)×27÷25
36-720÷(360÷ 18)
1080÷(63-54)×80
(528+9 12)×5-6 178
8528÷4 1×38-904
264+3 18-8280÷69
( 174+209)×26- 9000
8 14-(278+322)÷ 15
1406+735×9÷45
3 168-7828÷38+504
796-5040÷(630÷7)
285+(3000-372)÷36
1+5/6- 19/ 12
3x(-9)+7x(-9
(-54)x 1/6x(- 1/3)
1. 18. 1+(3-0.299÷0.23)× 1
2.(6.8-6.8×0.55)÷8.5
3.0. 12× 4.8÷0. 12×4.8
4.(3.2× 1.5+2.5)÷ 1.6 (2)3.2×( 1.5+2.5)÷ 1.6
5.6- 1.6÷4= 5.38+7.85-5.37=
6.7.2÷0.8- 1.2×5= 6- 1. 19×3-0.43=
7.6.5×(4.8- 1.2×4)= 0.68× 1.9+0.32× 1.9
8. 10. 15- 10.75×0.4-5.7