(Source: China Children's Publishing House, Mathematics Teaching Plan and Homework Design, Volume 1 1%.

Number of supported exercises)

The answer to this question is obviously wrong in the sense of percentage.

"Although there are scores first and percentages later in the world, the percentage of rebirth in the denominator is

100 score. However, with the development of society and the progress of science and technology, scores and percentages are not exactly the same in meaning "(see" Some Understanding of Percentages "on page 62 of Mathematics for Primary and Secondary Schools 200 1 No.7 and No.8). )

The definition of percentage in current textbooks is also very clear: "The number indicating that one number is the percentage of another number is called percentage". Percent seems to be used to express the relationship between two quantities, but it does not mean the fraction with the denominator of 100. But if we belong to percentage, this question should be correct, because percentage belongs to the category of fraction. There are two kinds of fractions: one is to express a specific quantity, and the other is to express the relationship between two quantities, that is, fractions. From this point of view, percentage belongs to one of the fractions and the denominator is 100.