What can 0 stand for?

0 means "no", which is the original meaning of 0.

It can also mean:?

1 digit. For example, 10, 100 and so on. , where 0 has positional significance. ?

② Accuracy. 0.2, 0.20, 0.200, etc. , which means accurate to one tenth, one hundredth and one thousandth respectively.

3 dividing line. For example, 0 degrees Celsius, which is the dividing line between the temperature above zero and the temperature below zero. ?

④ Critical point. When the water temperature is 0 degrees, this is the key temperature for the mutual transformation between water and ice, and it is the critical point and junction point. It can be seen that 0 is not only meaningless, but also has many specific contents, which are richer than other numbers. As a math teacher, equating 0 with nothing will make a joke. If the lowest temperature is 0 degrees this morning, there will be no temperature this morning.

Source:

0 comes from a stone tablet, and the number on the tablet is 270. The number 0 comes from the number 270...0 is an integer. It is also a rational number.

Líng, dòng (in some industries such as the army and public security, it comes from the shape of a hole)