There is a peach tree on the mountain. A monkey went to steal peaches. On the first day, he stole a tenth. In the next eight days, he stole one ninth, one eighth, one seventh, ..., one third and half of the existing peaches. After nine days, there were only 10 peaches left on the tree. How many peaches are there on the tree?
3, a pile of watermelons, the first time sold a quarter and four of the total, the second time sold the remaining half and two, the third time sold the remaining half and two, and there were two left. How many watermelons are there?
4. Multiply 1997 by an integer as small as possible but greater than 1 so that five consecutive 9s appear in the product. What is the product?
5. Take three of the nine numbers from 1 to 9 to form six different three-digit numbers. If the sum of six three digits is 3330, what is the largest of these six three digits?
6. There are two shopping centers. When the profit of the first mall decreases by 15% and the profit of the second mall increases by 18%, the profits of the two malls are the same. So how many times is the profit of the first shopping mall more than that of the second?
7. Party A and Party B leave school for the Children's Palace at the same time. It is understood that the distance from the school to the Children's Palace is 2400 meters. Party A will return to the school immediately after arriving at the Children's Palace and meet Party B at a place 300 meters away from the Children's Palace. At this point, they have been out of school for 30 minutes. How many meters do Party A and Party B walk every minute?
8. Stack 2 100 cubes with a side length of 1 cm into a cuboid. Its height is 10 cm, and its length and width are greater than its height. What is the circumference of its bottom?
9. There is a cuboid block with a length of 10 decimeter, a width of 8 decimeters and a height of 6 decimeters. Now it is processed into the largest cube. How many cubic meters of wood have been cut down?
10, the railway between a and b is 675 kilometers long. A train left A for B at 5: 30 pm on the first day, with an average speed of 45 kilometers per hour. What time does the train arrive in B?
1 1. Shipborne diesel can be used for up to 6 hours. When it left with the wind, it was 30 kilometers per hour, and when it came back with the wind, it was 15 kilometers per hour. How far should the ship sail before returning?
12.5 chicken 4 rabbits * * * weighs 22kg, and chicken is lighter than rabbit. If a chicken and a rabbit are exchanged, the weight of four chickens and a rabbit is equal to the weight of three rabbits and a chicken. How many kilograms do chickens and rabbits weigh respectively?
Ps: That's all I found. If you need other topics, you can go here (according to your version):/question/124358635.html? fr=qrl&。 983 & index =1& Fr2 = query. There are many percentage application problems in it, but I think it is too simple to do additional problems.