Example: Xiaoming bought five apples, each 2 yuan. He gave it to the merchant 10 yuan, so how much should he get back?
First of all, let's assume that the amount of gold and silver that Xiao Ming should get back is X yuan.
List the equation: 5×2+x= 10.
Explanation: 5×2 represents Xiaoming's money for buying apple flowers, X represents the amount he should get back, and 10 is the total amount he gave.
Now let's solve this equation and find the value of X.
Calculation process:
Let's calculate the amount of money Xiao Ming spent on apple blossoms: 5×2= 10 yuan.
Then subtract the money spent on apple blossoms from the total amount 10 yuan to get the money to be repaid: 10- 10=0 yuan.
So Xiao Ming should look for 0 yuan.
Answer: Xiao Ming should look for 0 yuan.
Through this example, we can see how to use tabular calculation to solve practical problems. This not only helps us to understand the concept of mathematics, but also enables us to better use mathematical knowledge to solve problems in life.
Master the calculation method of mathematical formula;
1. Mastering basic operation rules: Formula calculation is one of the basic knowledge of mathematics, and you need to master basic operation rules such as addition, subtraction, multiplication and division, as well as unit conversion and the use of brackets. Only by mastering these basic laws can the determinant be calculated correctly.
2, more practice: column calculation needs more practice, through a lot of practice to improve their calculation speed and accuracy. You can find some math problems to practice and pay attention to the summary and reflection of right and wrong problems.
3. Understand the meaning of the problem: Dan Chang needs to understand the meaning of the problem before entering the determinant calculation, and clarify the problems to be solved and the relationship between the given data and conditions. Only by understanding the meaning of the question can the determinant be calculated correctly.
4. Careful: column calculation needs to be careful and pay attention to details. For example, unit conversion, the use of parentheses and so on all need special attention. At the same time, we also need to pay attention to the details in the calculation process, such as the writing of numbers and the omission of calculation symbols.
5. Develop good study habits: Develop good study habits, such as reviewing in time, summarizing wrong questions and taking notes. These habits can help you master math knowledge better and improve your spreadsheet calculation ability.
6, study group cooperation: you can form a study group with your classmates to study and discuss math problems together, help each other and improve each other. Through group cooperation, we can better master mathematical knowledge and improve table calculation ability.