1. Reading is to express numbers in words. Read integers step by step from high to low.

2. Writing numbers means using numbers and symbols to represent a number. Integers are written from high to low, level by level.

The formula for writing numbers in primary school mathematics reading is as follows:

It is not difficult to read and write numbers, as long as you remember them regularly. Grading from low to high, find the right sign and take notes. There is a zero at the beginning of each level. Remember to read only a zero. The last "zero" of each level is not read, and the decimals are read in order. Write numbers from high to low, and the decimal parts come in turn. Which number has no unit, use "zero" to account for it.

What is a single digit:

In the decimal counting method, if there is no non-zero number to the left of the unit, then this integer is a unit, also called single digits, that is, a positive integer less than 10 is called single digits, and a positive integer not less than 10 is called multi-digits.

How to learn mathematics well;

1. Learn mathematics as a language, learn the usage of every term, and be familiar with the meaning of every symbol.

2. Preview the knowledge in time before class, so that you can better digest the knowledge that you can't learn in math class.

Don't let go of any seemingly simple examples, they are often not that simple, or they can lead to many knowledge points.

4. Mathematics focuses on understanding. When you begin to learn knowledge, you must understand it. So listen carefully in class and see how the teacher explains it.

5. Mathematics scores 80% from basic knowledge and 20% from difficulty, so it is not difficult to test 120.

6. Mathematics needs to be done by heart. It is difficult for impetuous people to learn mathematics well, and it is the last word to do the problems in a down-to-earth manner.

7. If you want to learn math well, you can't do it without thinking. You can't hide when you encounter problems, and you can't stop until you figure it out.

8. The most important thing in mathematics is the problem-solving process. It is important to know mathematical thinking. With clear thinking, mathematics is naturally learned.

9. Mathematics is not for seeing, but for calculating. Maybe I have no idea for a second. When you pick up the pen and start calculating, you will be suddenly enlightened.

10. One of the reasons why I can't do math problems is that I don't understand the examples, so I must not let go of the examples in the math book.