Data with percentages, what is a percentage

The pass rate of random inspection products, the correct rate of doing questions, the alcohol content of alcohol, the interest rate and tax rate in the bank, the utilization rate of wastewater, the attendance rate of employees, the germination rate of various seeds, the survival rate of various tree species, etc.

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

Seventy-nine percent of people in the United States want the war to stop.

The ocean covers 70% of the Earth's land area

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.

The ratio of the sea to the land on the earth, the ratio of the blood of the human body, the interest on bank deposits, the personal income tax paid on the profits, and the various tax rates, as well as the rate.

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

1) The flour yield of wheat is 80%.

2) The pass rate of the product is 90%.

3) Germination rate 70%.

The bank's interest rate.

Tax rate Survival rate.

The incidence of the percentage of life has sweaters containing wool 70Chemical fiber 30, cotton clothes containing cotton 88, spandex 3, polyester 9 and if the juice contains fruit components 80, other compounds 20 and so on

Watchtower Lord!

The composition of clothes is the proportion of various ingredients in food, the enrollment rate, the passing rate, the survival rate of a certain crop, the mortality rate, the flour rate of wheat, the oil yield of beans, etc.

There are a few examples of percentages, such as:

Fabric: 100% cotton, 100% polyester, filling 100% polyester, etc.

In the supermarket, there are often eye-catching signs on the packaging bags of some foods with "no increase in price, 20% added", so affordable! The same words appear on toothpaste.

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

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

Other applications of percentages:

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

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

Human tears, moisture, etc. are some examples of the use of percentages.

Percentages indicate how many percent of a number is another number, and percentages are also called percentages or percentages.

These numbers have a "%" symbol and are called percentages. These percentages all indicate that one number is a hundredth of another.

Percentages are read in the same way as fractions, with the denominator (i.e., %), and then the numerator. When writing percentages, they are generally not written in fractional form, but are represented by adding a percent sign after the original numerator. Example:

Read out the percentages below or write out the percentages below5% 1 percent, 28 percent, 0.5 percent.

The connection and difference between the percentage and the division of the car modulus.

Connection: can represent the multiplier relationship between two numbers; Percentages are special fractions.

Distinguish. 1. The meaning is different, the percentage only indicates the multiplier relationship between the two numbers, and cannot be taken with units; However, a fraction can not only represent the multiplier relationship between two numbers, but also represent a specific quantity, and when representing a specific quantity, the fraction can have a unit.

2. The numerator of the fraction can be an integer or a decimal; The numerator of a fraction is generally not written as a decimal number and is generally a non-zero natural number. <>

A percentage indicates that a number is a percentage of another Xianghu number that is a percentage of the number that is answered by another auspicious hu, also called a percentage or percentage. Percentages are not usually written as fractions, but are represented by the symbol "%" percentile.

A percentage is a special fraction with a denominator of 100, and its numerator may not be an integer. A percentage indicates how many percent a number is another and represents a ratio. A percentage is a way to express a proportion, ratio, or fractional value, such as 82% for eighty-two percent, or

82。<> percentages, also known as percentages or percentages, are usually not written as fractions, but are expressed in percent signs (%), such as 41%, 1%, etc. Since the denominator of the percentages is 100, that is, they are all in 1%, it is easy to compare. Percentages only represent the relationship between two numbers, so units cannot be added after the percent sign.

A percentage is a way to express a proportion, ratio, or fractional value, such as 82% for eighty-two percent, or82。Percent and fold represent tenths, for example, "seventy percent" and "seven folds" represent 70 100 or 70% or.

So the percentage cannot be followed by the unit.

Percentages and decimals.

1) Percentile decimal place: remove the percent sign and shift the decimal point to the left by two places. For example, 75% can be turned into.

2) Decimal Percentage Trillion Fraction: Add the percent sign, and the decimal point is shifted to the right by two places. For example, it can be reduced to 62%.

Examples of percentages in life are 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 had a 10% lower IQ.

3. Use bright cherry blossoms when calculating interest, taxes, and profits. 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.

4. There is about 80% nitrogen in the air, and about 20% oxygen.

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

6. 98% of our teachers have a college degree.

7. In this sweater, 85% of the wool is Yangjingcong, and 15% is chemical fiber.

8. The survival rate, germination rate, attendance rate, oil yield, score rate, etc. indicate that the percentage of the individual in the total will not exceed 100% (maximum 100%).