The meaning of percentage; A number indicating that one number is a percentage of another number is called a percentage. Percentages are also called percentages or percentages. Percentages are usually not written in the form of fractions, but are represented by the symbol "%"(percent sign). Write 4 1% and 1%. Because the denominator of percentage is 100, that is, 1%, which is convenient for comparison, percentage is widely used in industrial and agricultural production, science and technology and various experiments. Especially the percentage, is often used for investigation, statistics, analysis and comparison.

(1), 60% of the freshmen admitted to Tsinghua University this year are in poor health.

(2) I have read 40% of a book.

(3) 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 are about 79% nitrogen and 20% oxygen in the air.

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

3. 79% people in America want to stop the war.

4. Holiday consumption in Shanghai accounts for 50% of the whole year, and night consumption accounts for 50% of the whole day.

From June 5438 to last year 10, due to the National Day holiday, the total social retail sales in Shanghai reached 4.887 billion yuan, breaking the monthly sales record in Shanghai. According to statistics, the total retail sales of social consumer goods in Shanghai last year was 654.38+0.59 billion yuan, and holiday consumption accounted for half of the country.

Similarly, due to the accelerated pace of work and life, in the total retail sales of social consumer goods of 654.38+059 billion yuan completed last year, night consumption after 6 pm also accounted for 50% of the total consumption.

5. In China's GDP, the proportion of primary industry decreased from 23.8% in 1992 to 2 1.2% in 1993.

This year's output is 30% higher than last year's.

(1), the down jacket label says:

One kind: Youngor down jacket: duck down accounts for 90%

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

⑵ Ningbo sweet dumplings

One: the filling content accounts for 35%

The other: the filling content accounts for 26%

Percentage in life:

(2) A garment contains 80% cotton and 20% polyester.

(3) Alcohol content 1 1.5%

(4) The milk content of milk is greater than or equal to 60%.

(5) Fat ≥3.5%