Percentage in life Environmental protection percentage in life

As follows:

1. In the weather forecast program on TV, the weather conditions and precipitation probability of the night and tomorrow will be reported.

For example, the probability of precipitation tonight is 20%.

2. A macroscopic description of the experimental subjects when publishing the results of the survey.

For example, an experiment concluded that people who read text messages regularly have a 10% lower IQ.

3. It is used to calculate interest, tax and profit.

For example, the central bank issued an announcement showing that since October 24, the interest rate on RMB loans and deposits of financial institutions will be further reduced by one percentage point, of which the benchmark interest rate for one-year loans will be reduced by one percentage point and the one-year deposit interest rate will be reduced by one percentage point to.

Common fallacies:1. Percentages often represent a proportional relationship, but percentages can sometimes exceed 100%.

2. The nutrient reference value in the nutrient facts table on the food packaging box does not indicate the percentage of the substance in the food, but the proportion of the amount of the substance in the food to the per capita normal daily intake, which also explains why the sum of the percentages in the nutrition facts table is often not equal to 100%.

1) When Liyang created a sanitary city, the relevant departments tested the food on the stalls, and the test results showed that the pass rate of the food was.

Sixty percent of the freshmen enrolled at Tsinghua University this year are in poor physical condition.

A book has been read for 40 years.

The bicycle factory completed 60% of the annual plan in the first half of the year

If you were a customer, which one would you buy.

1. There is about 79% nitrogen in the air, and oxygen accounts for about 20%.

2. The physical exercise compliance rate of class six (2) is 95%.

3. 79% of people in the United States want to stop the war.

4. Shanghai's holiday consumption accounts for 50% of the year, and night consumption accounts for 50% of the whole day

In October last year, due to the National Day holiday, Shanghai's total retail sales reached 100 million yuan, breaking the monthly sales record in Shanghai's history. According to statistics, of the 159 billion yuan of total retail sales of consumer goods completed by Shanghai last year, holiday consumption accounted for half.

Similarly, due to the acceleration of the pace of work and life, of the 159 billion yuan of total retail sales of consumer goods completed last year, night consumption after 6 p.m. also accounted for 50% of the total consumption.

5. In China's GDP, the proportion of the primary industry decreased from 1992 to 1993.

6. This year's production will increase by 30% compared with last year.

Tell us what you think.

The down jacket label reads:

A: Youngor down jacket: duck down accounts for 90%.

Another: Combo down jacket: duck down accounts for 65%.

Ningbo glutinous rice balls. A: 35% of the filling

Another: 26% filling

Percentages in life:

1) A kind of clothing contains 80% cotton and 20% silk

2) Alcohol content.

3) A milk contains 60% milk

4) Fat

Humans recently discovered a planet where 75% of the surface is covered by water, but only 10% of the creatures are likely to survive due to the high temperature.

The original price of a product is 100 yuan, and the current price is 80 yuan, and the current price is 80% of the original price

Always looking at text messages with your head down will lead to low work efficiency, and the brain reaction ability of staff will also slow down, and the IQ of people who read text messages often will drop by 10%.

Colgate's new crystal toothpaste, which covers an area of the world's land area (excluding Antarctica), is "30% crystalline".

Mineral water contains 6 minerals of calcium, magnesium, sodium, potassium, zinc and iron, and the content of calcium is 18%, magnesium 22%, sodium 30%, potassium 8%, zinc 12% and iron 10%.

China is the world's largest producer of energy-saving lamps, but 80% of its products are exported.

The air is about 80% nitrogen, and oxygen is about 20%.

Statistics on the rate of excellent student achievement.

Percentage of cancer in patients.

What percentage of per capita income has reached.

Bank interest tax percentage.

80% of the world's population owns only 20 percent of the wealth, while the other 20 percent own 80 percent of the wealth.

Percentages are special fractions with a denominator of 100, and their numerators are not integers. A percentage indicates the percentage that one number is a percentage of another, and indicates a ratio without the unit name.

Nutrition facts on food packaging bags.

Now I have this information about the percentage on my clothes: face cloth: 100% cotton, lining 100% polyester, filling 100% polyester.

Broadcast on today's news network: The annual living value of corn, wheat, watermelon, and other fruits and vegetables produced by farmers has increased by 32 percent compared with the previous view.

In the supermarket, there are often eye-catching signs on the packaging bags of some foods that say "no increase in price, 20% is added", which is so affordable! The same words appear on toothpaste. For example, Colgate's new crystal toothpaste "has 30% crystal content added".

The mineral water I was holding in my hand contained 6 minerals, calcium, magnesium, sodium, potassium, zinc and iron, and the wrapper stated that the content was 18% calcium, 22% magnesium, 30% sodium, 8% potassium, 12% zinc and 10% iron.

Always looking at text messages with your head down will lead to low work efficiency, and the brain reaction ability of staff will also slow down, and the IQ of people who read text messages often will drop by 10%.

The alcohol content of Luzhou Laojiao is 52%, the alcohol content of Yanghe Daqu is 38%, and the alcohol content of Prince Beer.

Sixty percent of the freshmen enrolled at Tsinghua University this year are in poor physical condition.

In human tears, there is moisture.

Now I have this information about the percentage on my clothes: face cloth: 100% cotton, lining 100% polyester, filling 100% polyester.

Broadcast on today's news network: The annual living value of corn, wheat, watermelon, and other fruits and vegetables produced by farmers has increased by 32 percent compared with the previous view.

In the supermarket, there are often eye-catching signs on the packaging bags of some foods that say "no increase in price, 20% is added", which is so affordable! The same words appear on toothpaste. For example, Colgate's new crystal toothpaste "has 30% crystal content added".

The mineral water I was holding in my hand contained 6 minerals, calcium, magnesium, sodium, potassium, zinc and iron, and the wrapper stated that the content was 18% calcium, 22% magnesium, 30% sodium, 8% potassium, 12% zinc and 10% iron.

In 2001, the monthly salary of the college students who have signed a contract is less than 1,500 yuan.

A number that represents a fraction of a number of another is called a percentage. Percentages are also called percentages or percentages. Percentages are usually not written as fractions, but are represented by a percent sign "%" after the numerator. There are many percentages in life.

Every day in the weather forecast program on TV, the weather conditions and precipitation probability of the same night and tomorrow during the day will be reported, reminding everyone to prepare in advance, just like the probability of precipitation at night today is 20%, and there will be five or six strong winds during the day tomorrow, and the probability of precipitation is 10%.

With the rapid development of technology, every middle-aged person is now equipped with a mobile phone with a variety of styles. Glenn, psychologist at Royal College, University of London. Wilson's research proves:

Always looking down at text messages, will lead to low work efficiency, the staff's brain response ability will also slow down, people who often read text messages IQ dropped by 10%, in the form of a percentage once again proved that although mobile phones provide convenience for people, but are very harmful to human health.

This is what I found in my life about percentages. I believe that as long as you observe carefully, you will also find that percentages are everywhere in life.

80% of China is the world's largest producer of energy-saving lamps, but 80% of the products are exported, and the domestic use is seriously low.

In 2001, the monthly salary of the college students who have signed a contract is less than 1,500 yuan.

An online survey shows that some netizens have not read famous books in recent years. In addition, of netizens have not read a famous book in the past ten years, and some netizens said that they have never read a famous book.

Not only mathematics, but also math-induced thinking!

The excellent rate of the math midterm test in this class is 50%;

The sixth grade students in our school make up about 15% of the school's total population;

98% of our teachers have a college degree;

In this sweater, wool accounts for 85% and chemical fiber accounts for 15%.

Oxygen in the air accounts for about 20% of the volume

China's territory occupies about the world's land area (excluding Antarctica).

At present, China's urban population accounts for 32% of the total population

China is the world's largest producer of energy-saving lamps, but 80% of its products are exported.

People who read text messages regularly have a 10% lower IQ

Percentage that indicates that a number is a percentage of another number is also called a percentage or percentage Percentage is usually not written in the form of a fraction, but is represented by the symbol " " " called the percent sign ( such as 41 , 1 is because the denominator of the percentage is 100, that is, all in 1 as a unit, easy to compare, therefore, the percentage has a very wide range of applications in industrial and agricultural production, science and technology, and various experiments Especially in the investigation and statistics, analysis and comparison, the percentage is often used

For example, if there are 100 students in the first grade, 47 of them are women, and 47 percent of the students are in writing For example, there are 200 students in the second grade, of which 100 are women, and 50% of the students are women. In the teaching of percentage problems, it is necessary to grasp the quantitative relationship of percentages (percentages) for analysis

There are three kinds of calculation problems in the percentage problem: Find how many percent of a number is another number, e.g. 45 is the hundredth of 225, i.e. 20 Find what is the percentage of a number Example:

Find what is 75 i.e. what is the hundredth of a known number, find this number: 75 is known to be 165, find this number is 165 75 220

A lot, such as, budding rate, attendance rate, pass rate, pass rate, success rate, etc.

For example, the accuracy rate of the test and the success rate of the test are all percentages in life.

Water in the human body makes up 75% of the body's weight

1. The school shared 960 kWh of electricity in February, and 25% more in March than in February.

2. Build a 96-kilometer-long road, the first week repaired the whole length, the second week repaired more kilometers than the first week, how many kilometers were repaired in two weeks?

3. The current price of a small commodity is RMB, which is 20% lower than the original price, how much is the original price of this small commodity?

4. The mining team mined a total of 4,500 tons last year, and this year's mining volume increased by 20% compared with last year.

5. The road repair team repaired a road, 540 meters were repaired on the first day, 20% of the total length was repaired on the second day than the first day, and the remaining 30% of the total length was not repaired, how many meters is the total length of this road?

6. The oil yield of peanuts is 40%, and 50 bags of peanuts are transported, with an average of 40 kg per bag, how many kg of peanut oil can be produced?

7. Three road construction teams built a road, team A built 20% of the total length, team B built meters, and the rest of the meters were completed by team C, how many meters is the total length of this road?

8. A pile of coal is used in tons, and the remaining 25% is used. How many tons does this pile of coal weigh?

9. The garment factory plans to produce 1,500 suits in April, and the results are completed in the first half of the month.

10. Dig a canal, if you dig 15% of the total length and 20 meters every day, then it will be dug in 6 days. How many meters is the total length of this canal?

11. To build a road, the original plan was to complete it in 10 days, but the task was actually completed 2 days ahead of schedule, and the actual number of days used was less than the original plan. How much has the actual productivity improved?

12. The actual afforestation hectares of Xiaozhouzhuang last year were more hectares than planned, and how many percent more than planned?

13. From A to B, car A traveled for 40 minutes, car B traveled for hours, and the speed of car B was several percent faster than car A?

14. Use a batch of corn seeds to do germination test, the result is that there are 192 germinated seeds, and there are 8 seeds that do not germinate, and the germination rate of this batch of seeds is obtained.

15. There are a total of 251 students in the fourth grade of Hubin Primary School, and 1 person did not participate in the mid-term test for some reason, and 4 people failed the result.

Progression rate, ratio of study to play, etc.