1, exclusion method: exclude some obviously impossible options, thus narrowing the answer range.
2. Carry method: When the filled number needs to be carried, the carried number will be less than the original number minus 1, so you can try to take the carried number as the answer.
3. Backward extrapolation: Calculate from the back to the front to see which numbers can meet the conditions.
4. Enumeration method: list all possible answers, verify them one by one, and determine the minimum number to fill in.
5. Estimation method: For some questions that need to be estimated, you can get the answer quickly through estimation method.
6. Find the law: observe the law in a given condition or answer, so as to get the answer quickly.
7. Reverse thinking method: Thinking from the opposite or side of the question can sometimes find the answer faster.
8. Algebraic method: use algebraic expressions or equations to express the conditions in the topic, so it is easier to find the answer.
9. Graphic solution: For some geometric problems, you can draw pictures to help you think, so it is easier to find the answer.
10, Deduction: Reasoning step by step according to the conditions in the topic, so as to get the answer.
The function of minimum filling number in mathematics;
1. Help students improve their math literacy and problem-solving ability.
2. How much can be filled involves algebra, number theory, probability theory and other fields. By solving this kind of problems, we can better understand the concepts and principles of mathematics and master mathematical methods and skills.
3. The problem of the minimum number of spaces can also be widely used in real life. For example, in some competition questions or practical applications, we need to get the minimum answer through reasoning and analysis to fill in the blanks. Solving these problems requires not only mathematical knowledge and thinking, but also practical application ability and innovative spirit.
4. How many questions can be filled in can also help us better understand some concepts and principles in mathematics, such as arithmetic progression, geometric series, inequalities and so on. Through the question of how much you can fill in at least, you can further deepen your understanding and grasp of these concepts and principles.
5. The problem of the minimum number of spaces can also help us solve some problems in real life. For example, in some application problems or practical problems, we need to get the minimum fill-in-the-blank answer through reasoning and analysis. Solving these problems requires not only mathematical knowledge and thinking, but also practical application ability and innovative spirit.
6. The question of how much can be filled plays an important role in mathematics. By solving such problems, we can exercise our mathematical thinking and problem-solving ability, and improve our mathematical literacy and practical application ability. At the same time, the minimum number of words can help us better understand some concepts and principles in mathematics and solve some problems in real life.