1, correctly finding the unit "1" is the premise to solve the problem of score application.

No matter what kind of fractional application problem it is, there must be a unit "1" in the problem. Finding the unit "1" correctly is the premise and primary task to solve the problem of fractional application.

2. Finding the correct correspondence is the key to solve the problem of score application.

Every fractional application problem has a corresponding relationship between quantity and fraction, and correctly finding out which fraction (or quantity) corresponds to the required quantity (or fraction) is the key to solving fractional application problems.

3. According to the quantitative relationship, solve the "three-step" problem of fractional application.

Master the above relationship and quantitative relationship, and solve the fractional application problem according to the following three steps:

(1) Find the number of units "1".

(2) Determine the corresponding relationship.

(3) Prepare the solution according to the quantitative relationship.

4. Practice effectively, build a model and improve the ability to solve fractional application problems.

In order to solve the problem of fractional application correctly and quickly, we must practice more and understand the basic, slightly complicated and complicated structural features clearly, so as to solve the problem of fractional application skillfully and quickly.

Classification of fractional application problems:

1, find the fraction of a number.

The characteristic of this kind of problem is to know that a number is regarded as the unit "1", find its score, and solve this kind of application problem by multiplication. That is, the application problem that reflects the relationship between the whole and the part. The basic quantitative relationship is: total quantity × score = number of parts corresponding to score; Or know a number whose unit is "1" and another number accounts for its fraction, and find another number, that is, an application problem that reflects the relationship between two numbers. The basic quantitative relationship is: standard quantity × score = comparative quantity corresponding to score.

2. Find the fraction of one number to another.

This kind of problem is characterized by knowing two quantities, comparing their multiple relations, and solving this kind of application problem by division. The basic quantitative relationship is: comparison quantity ÷ standard quantity = score.

(1) What fraction of one number is another? Contrast quantity/standard quantity = score (score).

(2) Find how many fractions one number is more than another: difference ÷ standard quantity = fraction (how many fractions).

(3) Find how many fractions one number is less than another number: difference ÷ standard quantity = fraction (how many fractions are less).

3. Find the score of a given number. The characteristic of this kind of problem is to know the fraction of a number, find the unit "1", and solve this kind of application problem by division. The basic quantitative relationship is: the comparative quantity corresponding to the score ratio = the standard quantity.

Above content reference: Baidu Encyclopedia-Rating

Refer to the above content: Baidu encyclopedia-score problem