Examples of percentages in daily life

1, the weather forecast program on TV will report the weather and precipitation probability that night and tomorrow. The probability of precipitation tonight is 20%. 2. Macro description of the experimental subjects when releasing the survey results. For example, an experiment concluded that the IQ of people who often read short messages would drop 10%. 4. Indicates the ability or possibility of something having a certain property. For example, oil yield = oil quality/total physical quality × 100%, and germination rate = germination number/total number of seeds × 100%.

Percentage in life:

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

The number of sixth graders in our school accounts for about 15% of the whole school.

98% of the teachers in our school have college degrees;

In this sweater, wool accounts for 85% and chemical fiber accounts for15%;

The volume of oxygen in the air accounts for about 20%;

China's territory accounts for about 7. 1% of the world's land area (except Antarctica);

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

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

The IQ of people who often read short messages will drop10%;

China is the largest producer of energy-saving lamps in the world, but 80% of its products are exported, and the domestic usage is seriously low.

According to the statistics of undergraduate and junior college students in 200 1 year, 47. 1% of the signed college students have a monthly salary below 1500 yuan;