1, Xiaohua read a story book with a page of 120, and read the whole book on the day of 1/3. (1) 1 How many pages did he read that day? (2) How many pages are left unread?

Answer:120×1/3 = 40 (page)120-40 = 80 (page) or120× (1-kloc-0//3).

2. Xiaohua read a story book with a page of 120, read 1/3 of the whole book on the first day, and read 1/4 of the whole book the next day.

(1) 1 How many pages did you read this day? (2) How many pages did you read the next day? (3) How many pages have not been read?

Answer: (1)120×1/3 = 40 (page) (2)120×1/4 = 30 (page).

(3) 120-40-30 = 50 (page) or120× (1-1/4) = 50 (page).

Xiaohua read a story book with 120 pages. On day 1/3, he read the rest 1/4 the next day. How many pages did he read the next day?

120× 1/3=40 (page) 120-40 = 80 (page) 80× 1/4=20 (page)

Or (1—1/3) ×1/4 =1/6120×1/6 = 20 (page).

Xiaohua read a story book. On 1 day, he read 1/3 of the whole book, and the next day he read the rest 1/4, leaving six pages unread.

(1) How many pages does this story book have?

Answer: (1-1/3) ×1/4 =1/66 ÷ (1-1/3-1/6).

(2) How many more pages were read on 1 day than the next day?

Answer:12× (1/3—1/6) = 2 (page)

Xiaohua read a story book. On 1 day, he read 1/3 of the whole book. The next day, he read the rest 1/4. On 1 day, he read 20 pages more than the next day.

(1) How many pages does this story book have?

Answer: (1-1/3) ×1/4 =1/6 20 ÷ (1/3-1/6) =1.

(2) How many times the number of pages read on 1 day is that on the second day?

Answer: 1/3÷ 1/6=2 (times)

6. Xiaohua read a story book. On the first 1 day, he read 1/3 of the book. On the second day, he read 20 pages. On the third day, he read the rest 1/4, with 3/8 of the book still unread. How many pages does this story book have?

Answer:

7. A motorcycle completed a journey of 60 kilometers at an average speed of 20 kilometers per hour. On the way home, its average speed is 30 kilometers per hour. What is the average speed of the motorcycle during the whole round trip?

8. A batch of goods arrived at the station. On the first day, all the goods of 1/3 and 20 tons were shipped, and on the second day, all the goods of 1/4 and 30 tons were shipped. There are still 30 tons of goods in the station at this time. How many tons are there in this batch?

9. There is a batch of goods at the station. On the first day 1/3, the whole cargo was 20 tons short, and on the second day 1/4, the whole cargo was much 10 ton. There are still 70 tons of goods in the station at this time. How many tons are there in this shipment?

10. There is a batch of goods at the station. On the first day, all the goods were transported 20 tons, and on the second day, all the goods were transported 1/4, which was 10 tons. At this time, there are 1 10 tons of goods in the station. How many tons are there in this shipment?

1 1. There is a batch of goods at the station. On the first day, all the goods of 20 tons13 were shipped more, and on the second day, all the goods of 25 tons12 were shipped less. At this time, there are 37 tons of goods in the station. How many tons are there in this shipment?

12. There is a batch of goods at the station. 1/3 of all the goods were transported for the first time, and less than 3/4 of all the goods were transported for the second time 16 tons. At this time, all the goods were shipped out. How many tons are there in this shipment?

13. There is a batch of goods at the station. On the first day, two-thirds of the goods were transported less than 28 tons, and on the second day, three-quarters of the goods were transported less than 52 tons, which was just finished. How many tons are there in this shipment?

14. The chemical fertilizer plant plans to produce a batch of chemical fertilizers. On the first day, 1/6 of all tasks was generated, on the second day, 1/4 of the remaining tasks was generated, and on the third day, 1/5 of the remaining two days was generated. Therefore, there are still 50 tons unfinished. How many tons of fertilizer does the fertilizer plant plan to produce?

15, mother bought eggs and duck eggs ***2 1, of which duck eggs accounted for 3/7; Later, my mother bought some duck eggs, accounting for 7/ 13 of the total eggs. Later, my mother bought some duck eggs.

16. There is a pile of bricks. After moving out, 1/4 brought another 360 bricks. At this time, the pile of bricks was 20% more than before. How many bricks are there in this pile?

17, the master and the apprentice made 200 parts together, and the master made 25% more parts than the apprentice 14. How many parts did the apprentice make?

18, there is a mountain road. A car goes up the mountain at a speed of 30 kilometers per hour and returns from the original road at a speed of 50 kilometers per hour. What is the average speed of cars going up and down the mountain?

19, mentoring processes a batch of parts, and the number of parts processed by the master is 25 more than the total 1/2, and the number of parts processed by the apprentice is 1/3 of that of the master. How many parts are there in this batch?

20. A, B and C all delivered a batch of goods. Team A delivered 65,438+0/4 of the goods, team B delivered a part, and team C delivered 65,438+0/3 of the goods, and all of them were shipped out. It is known that Team A shipped less 10 tons than Team C. How many tons did Team B ship?

2 1, Party A and Party B go to the bookstore to buy books and take them to 54 yuan. Party A spends 75% of its own money, Party B spends 4/5 of its own money, and the rest is exactly the same. How much did Party A and Party B originally bring?

22. Team A and Team B jointly built a 2500-meter-long highway. Team A completed 2/3 of the assigned tasks, while Team B completed 3/4 and 50m of the assigned tasks, leaving 700m unresolved. How many meters are the tasks assigned by the two teams?

There are apple trees and pear trees in the orchard. The apple tree area is 4 hectares more than the total area 1/2, and the pear tree area 1/2. How many hectares of two kinds of trees have been planted?

24. There are two piles of coal in midsummer Chemical General Factory, weighing 2268 kilograms. Take out 2/5 of pile A and pile B of 1/4 * *, weighing 708kg. How many kilograms are there in raw coal piles A and B respectively?

25. Two workers, Party A and Party B, * * * simultaneously process 140 parts. A has completed 80% of his tasks, and B has completed 75% of his tasks. At this point, 32 parts of A and B * * * remain unfinished. How many parts do workers A and B need to make?

26. The master and the apprentice * * * processed 540 parts, the master processed 3/4 of his assigned tasks, and the apprentice processed 80% of the assigned tasks, and the remaining tasks were exactly equal. How many copies did the master and apprentice get respectively?

27. The school bought 220 books of * * *, took out 4 books of Class A 1/and 50 books of Class B1/5 * *, and lent them to fifth-grade students (1). How many books did A and B buy back?

28. The school bought a batch of books, among which literature and art books accounted for 4/9, mathematics books accounted for the rest 18/25, and the known mathematics books were 20 less than literature and art books. How many books are there in this batch?