1, when riding a bicycle, the number of meters that the bicycle walks with the pedal. We can measure the radius of the wheel, and then use the circumference formula of the circle to find out.

2. Area calculation. Own housing area, park area, playground activity area and so on.

3. Calculation of salary. Financial revenue and expenditure, daily consumption management and so on.

4. Calculation of mathematical addition, subtraction, multiplication and division. For example, the sale of goods, the calculation of dates, and the calculation of time.

5, family life cost calculation, after learning mathematics, will be involuntarily used in life. The overall planning method is often used, such as the arrangement of a series of things in the process of cooking, which are all learned in mathematical science.

Mathematics is a universal means for human beings to strictly describe and deduce the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence.

In this sense, mathematics belongs to formal science, not natural science. Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics. Mathematics plays an irreplaceable role in the development of human history and social life, and it is also an indispensable basic tool for studying and studying modern science and technology.