Finding the fraction of a number is a slightly more complicated application problem than finding the fraction of a number is a little more complicated. The quantity sought by the problem is not the quantity represented by the known fraction, but another quantity related to this quantity, which is an extension of the application problem of basic fractional multiplication. Therefore, the teaching basis of a slightly more complicated fractional application problem is one-step fractional multiplication application problem and general compound application problem, while the teaching basis of one-step fractional application problem is essentially the meaning of fractional multiplication.

The textbook helps students to analyze the quantitative relationship with the help of line graph and seek the problem-solving ideas. The key point is to find out what the score of a number is first, and then find out the problem-solving ideas according to the quantitative relationship of integer addition and subtraction. This problem-solving idea is easy for students to understand and integrate into their own knowledge structure, which is the basis for solving fractional division application problems with equations in the future. The slightly more complicated fractional division application problem and the slightly more complicated fractional multiplication application problem are completely consistent in solving ideas and quantitative relations. At the same time, it is consistent with the problem-solving method of middle school application problems, which lays the foundation for the study of middle school application problems. Therefore, this kind of thinking is the focus of this class and must be mastered by every student. After this solution, the textbook asks, "Are there any other solutions?" Let students think, let students open their minds when solving problems, deepen their understanding of quantitative relations and answer flexibly.