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.

In primitive society, human intelligence was low. At that time, stones were put into purses, or shells were strung into beads, and the items to be counted were calculated by the "one-to-one correspondence" method.

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

4. Statistical calculation. When you are late, you need to register with the duty officer and ask to write down the name of the grade class. In this way, the school will know which class is the latest this week and which class is the latest.

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

6. Computer-related workers, mathematics is essential in their work. Writing programs in C language requires sorting algorithms (such as quick sorting, insert sorting, heap sorting, merge sorting, radix sorting, Hill sorting, bucket sorting, tournament sorting, etc.). ). If you master the relevant knowledge of data structure, it will become very easy.