Students participating in the recycling activities organized by the school are required to have more than two-fifths of the tasks in one class every five years, three-tenths in two classes every five years, and the most in one class every five years.

In order to calculate which class has the most excess, we need to calculate the excess of each class first. First, suppose that the task of each class is 1 unit. One kind of five-year excess is 2/5=0.4, and the other is 3/ 10=0.3. Obviously, the five-year class has the largest excess. Therefore, five-year classes have the most surplus.

Fraction can be used to solve various practical problems, such as calculating proportion, average value, percentage and so on. At the same time, scores can also be used for data analysis and statistics. When performing fractional operation, various techniques can be used to simplify the calculation process, such as divisor, cross multiplication and so on. These skills can help us get the right results faster.

Fractions and decimals are both mathematical forms that express the relationship between parts and whole. Exploring the relationship between fractions and decimals can help students better understand the concepts and applications of fractions and decimals. In geometry, fractions are often used to describe the proportion and area of a figure. By exploring the application of fractions in geometry, students can better understand the concept and application of geometry.

Fraction plays an important role in the history and culture of mathematics. By understanding the historical and cultural background of scores, students can better understand the concept and application of scores and improve their cultural literacy. To sum up, score expansion can be carried out from many aspects, including understanding the meaning of score, mastering the nature and operation rules of score.

The Significance of Fraction in Mathematics

Fraction indicates the fraction of one number to another, or the ratio of one event to all events. Divide the unit "1" into several parts on average, and the number representing such a part or parts is called a fraction. When the denominator is 100, it can be written as a percentage, such as 1%.

The fraction composed of integer part and true fraction is called band fraction, and band fraction is > 1. When writing the band fraction, write the integer part first, and then write the fraction part. When reading fractions, read the integer part first, then the fraction part, with a "you" in the middle. Fraction means that the numerator is smaller than the denominator, and simplest fraction means that the numerator and denominator are coprime.