1, simple four operations: starting from simple addition and subtraction, gradually expanding to multiplication and division. In daily life, you can try to add up the amount on the shopping list, or calculate the number of days between two dates, so that you can exercise your sensitivity and calculation ability to numbers.
2. Oral calculation training: select some oral calculation questions and work out the results at the fastest speed in a limited time. You can use the questions provided by tools or applications, or you can find a workbook to do oral calculations. Gradually increase the difficulty and number of topics and challenge your limits.
3. Memorize numbers: Try to remember a string of numbers and repeat them as soon as possible. You can use your mobile phone number, credit card number, etc. , or you can use some specific number sequence. Through constant practice, the speed of digital memory and processing can be improved.
4. Decomposition and combination: decompose a larger number into smaller numbers for calculation, and then combine the results. For example, a two-digit multiplication can be decomposed into a ten-digit multiplication and a single-digit multiplication, and then the results are combined. This can simplify the calculation process and improve the speed of mental arithmetic.
5. Use mathematical skills: Be familiar with some mathematical skills and laws, such as the formula of 99 multiplication and the characteristics of square numbers. These skills help to get results faster and reduce mistakes in mental arithmetic.
6. Heuristic thinking: try to simplify the problem into a more computable form. By transforming a complex problem into a simple problem for calculation, the memory burden and calculation difficulty can be reduced.
Matters needing attention in mental arithmetic
1. Pay attention to concentration: During mental arithmetic training, make sure that you are in a quiet and undisturbed environment. Turn off your mobile phone, TV and other distractions, and concentrate on thinking and calculating. Concentration can help you do mental arithmetic more accurately.
2. Avoid careless mistakes: mental arithmetic requires a high degree of accuracy, so it is very important to avoid careless mistakes. Read the questions carefully and make sure you understand them clearly before you start the calculation. Calculate step by step to avoid skipping steps or ignoring details.