A certain workshop can produce 120 parts of type A, 100 parts of type B, or 200 parts of type C every day. Three parts of A, B and C can be taken 3, 2 and 1 respectively. Make a set. It is now required to produce the largest number of complete sets of products within 30 days. How many days should each of the three parts A, B, and C be arranged for production?

1. One-step addition and subtraction word problems with decimals

1. A mathematics reading book is 6.25 yuan, and a Chinese reading book is 5.86 yuan. How much does two books cost per ***?

2. A watermelon weighs 4.86 kilograms and a cantaloupe weighs 3.5 kilograms. How many kilograms more does a watermelon weigh than a cantaloupe?

One-step multiplication and division problems with two decimals 1 A kind of wool costs 48.36 yuan per kilogram. How much yuan should you pay to buy 3 kilograms? How about buying 0.6kg?

2. A professional group of sericulture raises 21 spring silkworms and produces 1,240 kilograms of cocoons in one day. On average, how many kilograms of cocoons are produced per cocoon?

3. Two-step calculation problem with three known conditions 1. Xiaohong read a storybook for 5 days, reading 12 pages every day, and there were 38 pages left. How many pages does this book have? (Draw a line segment diagram)

2. The canteen brought 3 bags each of flour and rice. Each bag of flour weighs 25 kilograms and each bag of rice weighs 50 kilograms. How many kilograms of flour and rice are shipped?

3. The militiamen used 250 rounds of bullets for target shooting in the first time, 320 rounds of bullets in the second time, and 180 rounds less than the total of the first two times in the third time. How many rounds of bullets were used in the third time?

4. Two-step calculation problem with two known conditions

1. The school bought 45 boxes of colored chalk, and bought 15 boxes more white chalk than colored chalk. How many boxes of chalk should I buy per ***?

2. An empty basket weighs 2 kilograms. Put 32 kilograms of peanuts into the basket. How many times does the basket of peanuts weigh more than the empty basket?

5. Multiple multiplication problems

1. The grain store transported two trucks of flour, each truck containing 80 bags of 25 kilograms each. How many kilograms of flour does this grain store transport? (Answer in two ways)

2. The third-grade students went to the vegetable garden to collect cabbage. They were divided into 4 groups, with 11 people in each group. Each person collected an average of 45 kilograms. How many kilograms of cabbage can be harvested per day?

1． The fertilizer factory plans to produce 7,200 tons of fertilizer. It has been in production for 4 months. The average monthly production of fertilizer is 1,200 tons. The remaining monthly production is 800 tons. How many months will it take to complete the production?

2. The plastic factory planned to produce 1,300 plastic modules and produced 780 pieces in 6 days. Based on this calculation, how many days will it take to complete the remaining production?

3. Master Li produced 252 parts in 4 hours in the morning, and worked for another 3 hours in the afternoon at this rate. How many parts does Master Li produce on this day?

4. The cement plant plans to produce 3,600 tons of cement and it will take 20 days to complete. The actual production is 20 tons more per day than planned. How many days does it actually take to complete the task?

5. A pile of 3.6 tons of coal is planned to be burned for 10 days. After improving the stove, 0.06 tons are saved per day compared with the original plan. How many days can this pile of coal be burned now?

6. Places A and B are 420 kilometers apart. A passenger bus plans to travel from place A to place B for 7 hours. I actually traveled 10 kilometers per hour more than originally planned. How many hours did it actually take to arrive?

7. Xiaoqiang returns to school from home. If he walks 50 meters per minute, he will return to school in 12 minutes. If he walks 10 meters more per minute, how early can he return to school?

8. To build a 6.4-kilometer-long road, the average construction time is 1.2 kilometers per month in the first three months, and the remaining 1.4 kilometers per month. How many months will it take to complete?

9． Xiao Ming spent 10.2 yuan on stationery and bought 6 pencils at 0.45 yuan each. The remaining money bought ballpoint pens at 2.5 yuan each. How many pens can he buy?

10. The garment factory originally planned to make 120 suits, with each suit using 4.8 meters of fabric. After improving the cutting method. Each suit saves 0.3 meters of cloth. How many suits can be made from the original cloth?

11． A storybook originally had 576 words per page and 25 pages. When reprinting, the font size was reduced and only 18 pages were required.

How many more words are there on each page now than before?

12. A passenger bus and a freight train depart from two places A and B opposite each other at the same time. The passenger bus travels 80 kilometers per hour and the freight train travels 60 kilometers per hour. After 5 hours, the two vehicles meet. How many kilometers is the railway between A and B?

13. Two engineering teams are working together to dig a 1,500-meter tunnel at the same time. Engineering team A starts working at one end and digs 14 meters per day. Engineering team B starts working at the other end and digs 16 meters per day. How many days will it take for the tunnel to be dug?

14. A and B type a 7,000-word manuscript at the same time. A types 600 words per hour, and B types 200 words more per hour than A. How many hours will it take to complete the task?

15. Xiao Ming and Xiao Qiang walk in opposite directions at the school gate after school. Xiao Ming 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 passenger car leaves from A, the truck drives in the opposite direction from B. It is known that the passenger car travels 65 kilometers per hour, and the truck travels 65 kilometers per hour. Travel 60 kilometers per hour. How many hours after the truck drove out did it meet the passenger car?

Fifth grade math application exercises (2)

Class: Name: Score:

1. The machine tool factory originally knew that each machine tool uses 1.02 tons of steel. , after improving the design, each machine saves 0.12 tons compared with the original one. How many machine tools can be made now from the steel used to make 300 machines?

2. Xiao Ming bought 6 pencils and 4 exercise books, each exercise book costs 0.68 yuan and each pencil costs 0.24 yuan. Xiao Ming pays 5 yuan, how much money should he get back?

3. Two trains A and B depart from two places opposite each other at the same time. Train A travels 80 kilometers per hour, and train B travels 70 kilometers per hour. The two trains are still separated 12 hours after departure. 110 kilometers, how many kilometers are there between the two places?

4. Guangming Paper Factory produces a batch of newsprint. It was originally planned to be completed in 28 days and needs to produce 12.5 tons per day. If the application is completed 3 days ahead of schedule, how many more tons will be actually produced per day than originally planned?

5. Master Li produces a batch of parts. In the first three days, he produced 126 parts. Based on this calculation, it will take another 12 days to complete the production task. How many parts are there in this batch?

6. The fertilizer factory planned to produce 84 tons of fertilizer in 30 days. The actual production was 0.2 tons more than planned per day. How many days earlier than planned was the task completed?

7. Processing a batch of clothing, 300 sets per day, can be completed in 16 days.

(1) If 400 sets are processed per day, how many days in advance can it be completed?

(2) If 20 more sets are processed every day, how many days will it take to complete the process?

(3) If it needs to be completed 5 days in advance, how many sets need to be processed every day?

8. A certain automobile factory planned to produce 16,800 cars throughout the year, but it completed the full-year production task 2 months in advance. At this rate, how many cars can be produced throughout the year?

9. Xinfeng Agricultural Machinery Factory processes 2,480 parts in one workshop. It used to be 100 pieces per day, but after 20 days of work, it was changed to 120 pieces per day. How many more days of processing will it take to complete the task?

10. A clothing factory originally made a kind of children's clothing, and each set used 2.2 meters of cloth. Now the cutting method has been improved, saving 0.2 meters of cloth per set. The cloth used to make 600 sets of this kind of clothing, how many sets can now be made?

11. Xiaohong bought 3 exercise books and 3 vocabulary books each. An exercise book cost 0.36 yuan and a vocabulary book cost 0.32 yuan. How much less did Xiaohong spend on buying vocabulary books than on exercise books?

12. The students carried water to water the trees. The third grade watered 45 trees. The third grade watered 10 fewer trees than the fourth grade. The fourth grade watered half the number of trees that the fifth grade. How many more trees do fifth graders water than third graders?

13. Two engineering teams jointly excavated a tunnel, each from one end. The first team excavated 12.6 meters per day, and the second team excavated 14.4 meters per day. After the first team excavated for 5 days, the second team After joining, the tunnel was finally opened in 21 days.

(1) How many kilometers long is this tunnel?

(2) How many meters did the two teams dig during the opening?

14. A car travels 63 kilometers per hour, and the speed of a car is 1.4 times that of a truck.

They departed from two places 270 kilometers apart at the same time and headed towards each other.

(1) How many hours did it take to meet?

(2) How many kilometers did the two cars travel when they met?

(3) If the departure time is 8:15, what time will it be when we meet?

1 A motorcycle travels 98 kilometers per hour, and a truck travels 80 kilometers per hour. Find:

(1) The ratio of the time taken by the motorcycle and the truck; < /p>

(2) The ratio of the distance traveled by a motorcycle to that of a truck;

(3) The ratio of the speed of a motorcycle to the speed of a truck.

2 A car drives from point A to point B, which is 500 kilometers away. It has traveled 280 kilometers. Find the ratio of the distance traveled to the remaining distance.

3 A project can be completed by Team A alone in 10 days, and by Team B in 8 days by itself. What is the ratio of the work efficiency of Team A and Team B?

There are 40 students in Class 45 (1), and 32 students meet the physical exercise standards. What percentage of the class does not meet the standards (i.e., find the non-compliance rate)?

5 Xiao Li, Xiao Zhao, and Xiao Wang work together to make a batch of parts. When it is completed, Xiao Li does the total, Xiao Zhao does the total, and Xiao Wang does the total. Find out what the three of them have done. Make the ratio of the number of parts.

6 In the first math test of Class 5 (1), 48 people passed and 2 people failed. Find the passing rate for this math test.

7 There are 38 employees in a certain workshop on a certain day and 2 employees are absent. Find the attendance rate.

8 A certain factory completed 56% of the planned output in the first half of the month, and captured 4% of the planned output. What percentage will the production increase this month?

The current unit price of a set of 9 self-study books is 160 yuan, which is 40 yuan lower than the original price. What percent of the original price is the current price?

10 The Greening Team of the Young Pioneers planted 360 trees in spring and 440 trees in autumn. 760 trees survived. Find the survival rate of saplings.

11 The mooncake factory produced 140 tons of mooncakes last year and 210 tons this year. What percent did the production increase this year compared to last year?

12 How many percent more is 6 kilograms than 5 kilograms? How many percent less is 5 kilograms than 6 kilograms?

13 A factory completed 56% of the planned output in the first half of the month, and 64% of the planned output in the second half of the month. What percent did the production increase this month?

14 The planned number of garments produced by the garment factory in the second half of the year is 20% higher than that in the first half of the year. So what percentage of the planned number of garments produced in the second half of the year is that of the first half?

15． The oil yield of rapeseed is 38%. How many tons of oil can be processed from 5 tons of rapeseed?

16. The planned investment to build a water plant was 5 million yuan, but the actual savings were 5% than planned. How many thousands of yuan were saved?

17. The oil yield rate of rapeseed reaches 85%. Qinjin Village planted 8 hectares of rapeseed and received 3,750 kilograms of rapeseed per hectare. How many kilograms of rapeseed oil can be produced?

18. There are 200 sixth-grade students in Xinzhuang Primary School, 120 of whom participate in interest groups. How many more students need to participate in order to make the number of people participating in the interest-grade primary class reach 88%?

19. A chicken farm raises 100,000 broiler chickens. If it sells 100,000 broiler chickens for the first time and 25% for the second time, how many thousands are left?

20. A pile of coal weighs 120 tons. 20% of the total weight is transported on the first day and 25% of the total weight is transported on the second day. How many tons are left?

21. A car used to use 12 liters of gasoline per hour. After the repair, the oil consumption was saved by 10%. How many liters of gasoline does the car use now?

22． There are 120 students in the fourth grade of a certain primary school. There are 10% fewer students in the fifth grade than in the fourth grade. How many students are there in the fifth grade?

23. A car travels 24 kilometers per hour. A motorcycle travels 70% faster than a car per hour. How many kilometers does a motorcycle travel per hour?

24 For a highway, the entire length was repaired in the first month, 6 kilometers in the second month, and 37.5% was left unfinished.

How many meters long is this road?

25 A factory produces a batch of parts. On the first day, it produces 40 pieces. On the second day, it produces 10% more than the first day. The output of the two days accounts for 25% of the total. How many parts are there in this batch? ?

26 A car is driving from City A to City B. It has traveled 72 kilometers, and 62.5% of the whole journey is left. How many kilometers does it take for this car to travel to City B?

27 Two cars A and B drive toward each other from two places at the same time. When car A has traveled 60% of the whole distance and car B has traveled 75% of the whole distance, the distance between the two cars is 140 kilometers. How many kilometers are there between the two places? How many kilometers does car A travel less than car B?

28 Qingfeng Store shipped 1,620 kilograms of oranges and pears. The pears shipped were 80% of the oranges. How many kilograms of oranges and pears were shipped? ．

29 The oil yield of rapeseed is 38%. How many tons of oil can be processed from 5 tons of rapeseed?

30. The planned investment was 5 million yuan to build a water plant. The actual saving was 5% than planned. How many thousands of yuan was saved?

31 The national industrial and commercial tax revenue in 1995 was 538.3 billion yuan, an increase of 105.1 billion yuan in 1996. What percentage of the increase in 1996 compared with 1995?

1. Xinhua Bookstore transported 5,250 literature and art books and science and technology books to rural areas. There were 25 packages of literature and art books and 80 packages of science and technology books. The number of books in each package was equal. How many books per package? How many scientific and technical books and literary and artistic books are there?

2. A grain store sells 50 bags of flour in the morning and 30 bags of flour in the afternoon. Each bag of flour weighs the same. 1,600 kilograms more flour is sold in the morning than in the afternoon. How many kilograms does each bag of flour weigh? How many kilograms of flour were sold in the morning and afternoon?

3. The first truck transported 80 bags of cement, and the second truck transported 65 bags of cement. It transported 1.5 tons less cement than the first truck. How many tons of cement did each of the two trucks transport? ?

4. There are two baskets of apples with the same unit price in a fruit shop. The first basket weighs 45 kilograms and the second basket weighs 39 kilograms. The second basket sells 15 yuan less than the first basket. The two baskets of apples each cost 15 yuan less than the first basket. How much is it worth? How much are two baskets of apples worth?

5. Huafengshui National Bank transported 840 kilograms more pears than oranges. The weight of pears is 1.5 times that of oranges. How many kilograms do oranges and pears weigh each?

6. There are 156 workers in the garment factory. The number of female workers is three times the number of male workers. How many male and female workers are there?

7. Two packages of disaster relief items weigh 154 kilograms. The first package is 14 kilograms less than twice the weight of the second package. What is the weight of each of the two packages of disaster relief items?

8. There are rice and flour in the warehouse. It is known that the flour stored is 4500 kilograms more than the rice, and the flour stored is 700 kilograms more than three times the rice. How many kilograms of rice and flour are stored in the warehouse? ?

9. I went shopping for clothes on Sunday and spent 175 yuan on a set of clothes. I know that the top is 15 yuan more expensive than the pants. How much are the tops and pants?

10. The perimeter of a rectangle is 55 centimeters. It is known that the length is 3.5 centimeters longer than the width. How many centimeters are the length and width of this rectangle?