1, formula song

Greater than the number, less than the number, the two brothers arrived together. The tip is smaller than the front and the opening is larger than the front. Two numbers stand in the middle, and whoever smiles at them. Where you speak, it's big. The place where the sharp corner goes is small. The sharp corner on the left is less than the sign. The sharp corner on the right is greater than the sign. The opening faces the big number and the tip faces the small number. The left side is greater than the sign; Small on the left, smaller than the size.

2. Introduction of specific symbols

The greater than sign (>) and the less than sign () are used to compare two numerical values. If the value on the left is greater than the value on the right, the result is true, otherwise it is false. Such as 5 >; The result of 3 is true, and that of 3 >:5 is false.

Less than sign (

The equal sign (=) is used to compare whether two values or variables are equal. If the value or variable on the left is equal to the value or variable on the right, the result is true, otherwise it is false. For example, the result of 5=5 is true and the result of 5=3 is false. On the other hand, in some programming languages (such as Python), "equal" is also used for assignment operation, for example, x=5 means assigning a value of 5 to the variable X.

Extended data:

1, the function of mathematical symbols

Mathematical symbols play a very important role in mathematics. They can not only be used to express various concepts and operations in mathematics, but also help simplify mathematical expressions and improve the efficiency of mathematical operations.

2, the characteristics of mathematical symbols

In addition, mathematical symbols are simple and abstract, and they are important tools for logical reasoning, operational solution, mathematical expression and communication. Now mathematical symbols have developed into a perfect language system.

As a mathematical language, it plays a concise, beautiful and accurate role in the development of mathematics, has an important influence on students' ability to analyze and solve problems, and has positive significance for the development of abstract literacy.