Distribution formula: 25- 1=24 24÷3=8 8÷2=4.
Comprehensive formula: (25- 1)÷3÷2=4.
This number is 4.
2. There are 4800 chickens in the farm * * *, and there are 300 hens more than cocks, which is 1.5 times. How many cocks and hens are there?
Distribution formula: rooster 4800-300=4500 (only)1.5+1= 2.5 4500 ÷ 2.5 =1800 (only).
Hen 1.5× 1800=2700 (only) 2700+300=3000 (only)
Comprehensive formula: rooster (4800-300) ÷ (1.5+1) =1800 (only)
Hen1.5×1800+300 = 3000 (only)
Answer: rooster 1800, hen 3000.
3. Li Shifu bought 4 pairs of socks and 2 pairs of shoes at 95.2 yuan each. It is known that each pair of shoes is 34 yuan and how much is each pair of socks?
Distribution formula: 34×2=68 (yuan) 95.2-68=27.2 (yuan) 27.2÷4=6.8 (yuan)
Comprehensive formula: 95.2-34×2÷4=6.8 (yuan)
Every pair of socks, 6.8 yuan.
Other application problems:
1. The farm tool factory wanted to produce 20,640 small farm tools, and 120 was half finished. How many pieces are produced on average every day?
2. A total of 523 teachers and students participated in tree planting. If 70 people are divided into a group, how many groups can they be divided into at most?
3. Plant trees along the road with a length of 180m, and plant a tree every 20m. How many trees do I need to plant?
There are three times as many eggs in the box as in the basket. There are 96 eggs in a box. How many eggs are there in six baskets?
A story book has 448 pages. Obviously, it took 16 days to read it. Fangfang reads 4 pages more than Mingming every day. How many pages does Fangfang read every day?
6. I bought 250 Jin of cabbage in the canteen, ate some, and there was 160 Jin left. How many kilograms did you eat?
Xiao Ming has 38 cartoons, 9 fewer than Xiao Lin. How many books does Xiaolin have?
8. A nursery has 6 nursery plots, and each nursery plot has 92 rows, with 89 trees planted in each row. How many seedlings are there in this nursery?
9. Last year, a TV station broadcast 1 192 hours of educational programs. How many hours does it air on average every month?
10. A stationery factory produces 250 pencil boxes every hour. How many hours does it take to generate 10000?