Off-line calculation, also known as "column vertical calculation", is a manual calculation method based on decimal values, which is widely used in daily life and mathematics education.

How to list off-type is calculated as follows:

Please click on the input picture to describe how to calculate, mainly

1, in the process of parting, the operation sequence line should be drawn according to the operation sequence, and "three checks" should be done. First, check whether the numbers and symbols copied from books to exercise books are correct. Second, check whether the numbers and symbols copied from horizontal to vertical are copied correctly. Third, it is necessary to check whether the draft is copied vertically, horizontally, and whether the decimal point position is correct or not.

2. If there are several kinds of brackets in an expression, the multiplication or division in brackets should be calculated first, then the addition or subtraction in brackets, and finally the brackets. When calculating, the formulas in brackets should be calculated in the order mentioned above, and then the results should be calculated in the order of numbers outside brackets.

3. Among the four operations, addition and subtraction are called primary operations, and multiplication and division are called secondary operations. Expressions that contain two or more operations are usually called mixed operations. The mixed operation of addition, subtraction, multiplication and division is also called elementary arithmetic. In elementary arithmetic, the prescribed calculation order is called operation order.

Methods of learning mathematics well

1. Cultivate interest: Interest is the most important motivation for learning mathematics. Understanding the application and practical significance of mathematics and trying to solve the problems of interest can cultivate interest in mathematics.

2. Establish a solid foundation: Mathematics is a gradually developing discipline and needs to be built on a solid foundation. We must master basic knowledge such as arithmetic operation and algebra in order to better understand and apply more advanced concepts.

3. Do more exercises: Mathematics is a very practical subject, so it is necessary to do more exercises to consolidate what you have learned. Choosing appropriate exercise topics and paying attention to repeated training will help deepen understanding and improve problem-solving skills.