There is a square pool surrounded by trees, with 8 trees on both sides and one at each vertex. The distance between every two trees is equal. How many trees are planted around?
Put a fence around each vertex of the square vegetable field. The distance between every two fences is equal. There are 12 fences on each side. * * How many fences are enclosed?
There is a triangular garden surrounded by pine trees, one at each vertex and 10 trees on each side, and the distance between every two trees is equal. How many trees are planted around?
Five Young Pioneers performed in a square, each vertex station 1 person. It is known that there are 6 people on each side. How many people are there in a station? 6 A bottle of peanut oil is 800g, and the oil is half eaten. Weighing the bottle together, there are 550 grams left. How many grams of oil are there in the bottle How many grams do you put in an empty bottle?
7. There are 200 students in grade two in Linyuan Primary School, and the number of students in grade three is twice as small as that in grade two 18. How many students are there in Grade Two?
8. There are 89 points for Chinese in the middle school entrance examination, and 5 points more for mathematics than Chinese. What about foreign languages?
How many points do I have to get before the average score of three subjects can reach 89?
9. Xinhua Bookstore sold 460 books on the first day and 2 books on the second day.
The Times sold 540 books on the third day. How many more books were sold the next day than the third?
10. Starting from 200 1, New Year's Day is Monday, starting from 200 1. What day is 1?
1 1. Li Shifu and Master Wang make six parts every hour. Li Shifu starts work at 5 am, and Master Wang starts work at 8 am. When can they produce 66 parts?
12 The kitten is 24 years old and has only had six birthdays. When was he born?
13. It takes 6 points to saw a piece of wood into 4 sections. How many points does it take to saw it into 13 segments?
14. If the sum of two numbers is multiplied by its difference, the product is 77. What are these two numbers?
15. Honghong will participate in summer camp activities, starting from July 20th and ending on August 6th. * * * How many days will the activity last?