1, understanding of numbers: the sense of numbers is manifested in the understanding and cognition of numbers, including the order of numbers, the size of numbers, the significance of cardinality and ordinal numbers, and the composition and decomposition of numbers. People with a good sense of numbers can quickly understand and deal with various quantitative relations, and flexibly use the concepts and operation rules of numbers.

2. Quantity perception: A sense of quantity enables us to accurately perceive and understand the quantitative relationship, and make accurate judgments even without intuitive physical measurement. For example, when comparing two quantities, people with a good sense of numbers can accurately judge which quantity is more and which quantity is less.

3. Mathematical intuition: The sense of number is also manifested as intuition and sensitivity to mathematical problems, and the solution to the problem can be quickly found without careful consideration. This intuition is based on a deep understanding of mathematical problems and the accumulation of experience.

4. Mathematical application: The sense of number is also reflected in the ability to apply mathematics to daily life and other disciplines. People with a good sense of numbers can apply mathematical knowledge and skills to various practical situations, such as shopping, planning trips, data analysis and so on. They can understand the application value of mathematics in the real world and use mathematics to solve practical problems.

Characteristics of number sense:

1. Understanding the meaning of numbers: People with a good sense of numbers can deeply understand the concept and meaning of numbers and can express and explain numbers in various ways.

2. Grasp the relationship between numbers: People with a good sense of numbers can grasp the relationship between numbers in specific situations and compare and sort them with trembling fingers.

3. Use numbers to express and communicate: People with a good sense of numbers can use numbers to express and communicate information and connect numbers with real life.

4. Choose the right algorithm: People with a good sense of numbers can choose the right algorithm according to the specific situation of the problem and estimate the result of the operation.

5. Perception of mathematical situations: People with a good sense of numbers respond quickly to mathematical situations and can accurately understand and solve problems.

6. Quick, accurate and agile response: People with a good sense of numbers can respond quickly, accurately and promptly when facing mathematical problems.

7. Perception, test and correction of the results: People with a good sense of numbers can predict their answers and test and correct the results.