1. An orchard is planted with 125 apple trees, and the number of pear trees is 20 times less than that of apple trees. How many trees are planted in this orchard?

2. A section of road is 324 meters long, 240 meters has been repaired, and the rest is planned to be completed in 4 hours. How many meters are repaired per hour on average?

3. Hong Guang Printing Factory bound a batch of diaries, 960 copies were bound three days ago, and 420 copies were bound every day after 16. How many copies are there in this batch of diaries?

A typist enters 200 Chinese characters in 4 minutes. According to this calculation, how many minutes does it take to input 3000 Chinese characters?

5. Three bags of flour weigh 75 kilograms, and eight bags of flour weigh how many kilograms?

6. A steel plant needs 5 tons of water to smelt 750 kilograms of steel. According to this calculation, how many kilograms can a steel mill make by saving 55 tons of domestic water a day?

7. Five boxes of bees can brew 375 kilograms of honey a year. According to this calculation, how many Jin of honey can a 19 box of bees brew a year? How many boxes of bees does it take to brew 1725 kg of honey a year?

8. Two grade students go to buy books. There are 48 students in grade three, each of whom bought two books, and each of them bought three books in grade four. The total number of books bought in grade four is as much as that bought in grade three. How many people buy books in the fourth grade?

9. The workers repaired the road. Forty workers were originally planned, but 45 workers were actually used. The road is planned to be built for 90 days. How many days did it actually take?

10. Xiaohua needs 20 points to walk home from school and 10 points to ride home by bike. Xiaohua walks 45 meters every minute. How many meters does he ride a bike in each branch?

1 1. The school bought 15 boxes of colored chalk, each containing 50 pieces, and used 10 boxes. How many useless branches are left?

12. The first, second and third workshops of Haitian Machinery Factory each produce 6 boxes of parts, each box 120 pieces. How many pieces did a * * * produce?

13. One loom weaves 2 1 m an hour. How many meters do four identical looms weave in five hours?

14. The bus traveled from Nanjing to Shanghai at a speed of 60 kilometers per hour, and it took half the journey in three hours. Because one person in the car is ill, the rest of the journey will take 2 hours. How many kilometers per hour on average?

15. Master Liu processed 4255 parts in 23 days, Wang.

Master Liu handles more pieces per day than Master Liu 18. How many parts does Master Wang process every day?

16. A cow in Uncle Li's family eats 50 kg of grass 10 day. According to this calculation, how many days can 155 kg of grass feed this cow?

17. lakeside park cruise ship 18, daily income 1008 yuan. According to this calculation, there are now 26 cruise ships, how much income will be increased every day?

18. The factory has to process 360 parts, and Wang Can Jr. finished it in five days. How many parts can he process in eight days at this speed?

19. I read a story book, 20 pages a day, and I read half of it in 5 days. How many pages are there in this book?

20. The teacher bought six pens, which cost three times as much as ballpoint pens, and the price of ballpoint pens was 2 yuan. How much did the teacher spend on this pen?

2 1. A workshop of agricultural machinery factory is divided into three groups to process 3420 parts, with workers 12 in each group. How many parts does each worker process on average? (Solve in two ways)

22. The factory rents 10 vehicles to transport 480 tons of goods, and each vehicle transports 12 times. How many tons does each car transport at a time?

23. Woodpeckers can eat 645 pests a day, and frogs can eat 608 pests in 8 days. How many pests do woodpeckers eat more than frogs every day?

24. A pile of coal 160 tons, and four trucks carry 96 tons three times. According to this calculation, how many times can four trucks transport this pile of coal?

25. The construction team plans to pave a 90-meter road every day and finish it in 20 days. Actually, it only took 18 days. How many meters are paved on average every day?

Thinking about the problem:

1. When Qiang Qiang was 8 years old, his father was 32 years old. How old was his father when he was twice as old as Qiang Qiang?