1, change the shape of the number:
This is the most direct method. Move a match in the middle of 3 to the top of 3, and 3 becomes 4. In this way, you can change 3 into any number greater than 3. The key to this movement is to move the middle match of 3 to the top, thus changing the shape of the number.
2, the application of addition and subtraction:
Since you can change 3 into other numbers by moving matches, you can also consider adding and subtracting numbers. If you add a match to the top of 3, you get the number 4; If we remove a match from the top of 3, we get the number 2. This way of thinking can not only change numbers by moving matches, but also think about problems from the perspective of mathematical operation.
3, the use of mathematical operations:
If each match is treated as the value of 1, then 3 is 3. When moving a match, it is equivalent to adding or subtracting 1 from the numeric value. So, if you want to get other numbers, you just need to add or subtract the corresponding number from the number of 3.
For example, if you move up the match of 3, you get 4, which is equivalent to 3 plus1; If you move the match of 3 down, you get 2, which is equivalent to 3 minus 1. This method uses mathematical operation to solve the problem of moving matches, which is not only simple and clear, but also very practical.
The importance of learning numbers:
Numbers are the basic tools of expression and communication. Numbers are often used to describe and record whether in daily life or at work. For example, numbers are needed to describe the length, weight and height of an object. Numbers help to express concepts accurately and communicate better.
2. Numbers can be used to analyze and solve problems. Numbers play a vital role in science, engineering, mathematics and other fields. Through digital calculation, we can analyze the data and solve various problems in practice. For example, in medicine, numbers can be used to analyze the condition and formulate treatment plans; In economics, numbers can be used to analyze the economic situation and formulate economic policies.
3. Numbers are also closely related to logical thinking and reasoning ability. The calculation and application of numbers involve many abilities such as logical reasoning, judgment and thinking training. Learning numbers can exercise thinking ability and improve logical reasoning ability.
Numbers are also the basis of computers and modern science and technology. The development of digital technology gave birth to computers and promoted the rapid development of modern science and technology. Digital technology has penetrated into all fields of modern society, and mastering digital skills has become one of the necessary qualities for modern people.