The application of mathematics percentage in the sixth grade of primary school needs concrete analysis of specific problems to find the correct unit "1".

For example, 1, boys account for 55% of the class, and the number of boys is regarded as1;

2. Girls account for 70% of the number of boys, and the number of boys is regarded as1;

3, 32 people is a few percent of 50 people, 50 people as a unit1;

4. 90% of this road has been repaired, and the length of this road is regarded as1;

5. Xiaoming read 45% of a book and took the number of pages of this book as1;

6. The seed germination rate is 90%. The number of experimental seeds is regarded as the unit1;

7. The attendance rate is 98%. With the total number of people as the unit1;

8. The qualified rate is 78%, and the total number of products is regarded as1;

9. The passing rate is 90%, and the total number of people is regarded as1;

10, the correct rate is 80%, and the total number of questions is regarded as 1.

If you don't understand any specific questions, please ask them.