What is the score of a number? This kind of application problem is actually the application of the meaning of multiplying a number by a fraction. It is the most basic problem in the application of fractions. Not only is the one-step application problem of fractional division based on it, but many compound fractional application problems are extended on it. Therefore, it is of great significance for students to master the solving methods of this kind of application problems. In teaching, I grasp key sentences, find two comparative quantities, find out which quantity is the unit "1", and then answer according to the meaning of the score after the required quantity is a fraction of the unit "1".