How to do the application questions quickly, the skills and methods of doing the application problem

I don't know what grade you're in, so I'll probably say some.

In general, you have to organize yourself first, see which words are useless, such as "a certain place decided to implement a tiered electricity price", and pay attention to the sentences with numbers.

Secondly, it is necessary to understand what people are asking, connect the known conditions with what they are seeking, and build a reasonable mathematical model. For example, if you are asking "how much iron sheet is needed for something", this is the area of the problem.

Then there are the more complex questions, which require you to use some more comprehensive methods, such as drawing pictures and lists.

Finally, it should correspond to the actual conditions, such as the number of people cannot appear as a decimal, etc., and choose according to the requirements of the question.

On the premise of grasping the foundation, do some training competitions. This improves thinking skills to speed up problem solving.

Pay attention to the speed of doing homework and set yourself a certain time to complete it to improve your computing ability.

When taking the exam, calm your mind, read the questions carefully, calculate carefully, and avoid wasting your time by making mistakes due to unnecessary negligence.

I'm in junior high school, welcome to exchange learning methods!

Add: I usually listen to some exuberant melodies when I do my homework, which not only makes my body and mind happy, but also speeds up the speed of doing problems.

Study carefully and use easy methods skillfully.

The tips and methods for doing the word problems are as follows:

1. Examination of questions: Application questions are usually relatively long, and candidates need to read the questions patiently, understand the conditions in the questions, find out the key points of the questions, remove the irrelevant and cumbersome information in the questions, and clarify the problems they want to solve.

2. Establish a model: On the basis of understanding the problem, establish a reasonable mathematical model. According to the situation and requirements of the problem, the appropriate mathematical formulas and methods can be selected for modeling.

3. Break out of the box: Sometimes you need to use some special mathematical thinking methods to solve problems. You can try to start with more questions, find different paths, and think from multiple angles to try to break through the stereotype.

4. Reasonable analysis and problem solving: Reasonable analysis can improve efficiency. When doing application problems, each step should be clearly analyzed, and the calculation and derivation should be refined as much as possible to shorten the steps and save time and cost.

5. Pay special attention to the transformation of equations: The transformation of equations in application problems can often greatly simplify the calculation, and special attention should be paid to it. You can try to transform a relatively complex equation into a simple equation, so that it is easier to operate and improve the efficiency of problem solving.

6. Arithmetic solving: If the application problem contains a large number of arithmetic operations, you can use algorithms to shorten the calculation time, such as matrix operations and other methods.

Precautions for doing application questions

1. Be careful of details: When doing application questions, you need to pay attention to details and check the details of each step, such as whether the units match, whether the data is correct, whether the calculation is accurate, etc. If there are detailed problems, it may affect the result of the solution and ultimately lead to a low score.

2. Error correction mentality: When the answer to the question does not match the result of your own deduction, you should stay calm and don't give up easily. You can check whether the calculation process and formula are correct or recheck the question to avoid mistakes due to misunderstanding the question.

3. Time mastery: To do practical problems, you need to pay attention to the control of time, and you should try to shorten the time for thinking to ensure that it is completed within the specified time, so as to avoid missing answers due to lack of time.

4. Familiar with formulas and knowledge points: scientific and reasonable review and memorization allow Ling Xi Wang Zhi to improve his ability to solve practical problems. Students should learn and be familiar with various mathematical formulas and knowledge points, and master their applicable occasions and related knowledge points, so that they can be used flexibly when dealing with practical problems.

5. Handling of abnormal situations: When doing application questions, some abnormal situations may be encountered, such as unreasonable data, complex models, unsolved constraint equations or multiple solutions, etc., which require candidates to respond flexibly according to the specific situation.

The process of learning mathematics is the process of learning mathematicians' thinking methods and thinking methods for solving problems.

Slow work and unsatisfactory math results are often not due to fewer questions, short time spent and lack of hard work, but because they do not know how to observe and think flexibly, and do not develop the habit of doing problems with a flexible mechanism. A pattern, copied and applied, mechanically repeated, after a long time, it becomes a problem-making machine. The process of doing problems is to develop potential, enlighten ideas and activate the thinking process.

Problem solving is the process of transforming the language of life into the language of mathematics.

For example, half of a wire is used for the first time, and the remaining half is used for the second time, and there are still 3 meters left. How many meters did the wire originally length.

The solution translates into mathematical language: a number is x minus its 1 2, and 1 2 is equal to 3 meters after subtracting 1 2.

Convert to mathematically: x-1 2-1 2x1 2=3

Hello, the application questions have high requirements for children's comprehensive ability:

1. First of all, children are required to be able to read the meaning of the question, and their reading comprehension ability must be cultivated;

2. To understand the meaning of the question, you must also be able to combine formulas, theorems, numbers and questions to make columnar solutions;

3. In the process of answering, it is also required that there are no errors in calculation, which is also a test of children's calculation ability.

Therefore, if the child does not do well in the application questions, it is recommended to refer to these points, and strengthen the practice to control the child's shortcomings.

Hehe, let's talk about my method, sister, the best thing in math is application problems. 1. Review the question.

First of all, read the question clearly and understand the meaning of the question. This step is not good, of course I can't solve the problem, this has a lot to do with the language, I think I Jiangsu Province high school application questions, often hundreds of words, comprehension ability is not good, of course was dizzy.

2. Clarify the relationship between quantities.

The relationship between primary and junior high school application questions is not complicated, and most of the problems can be solved by the list method. The so-called list method is to list each quantity on a table, some quantities seem to you to be very complicated in the question, but after the list is very clear, you can easily find the relationship. The key to high school application problems is modeling, whether to use quadratic functions, exponential functions, or trigonometric functions, etc., all need to be determined according to conditions, and sometimes several functions will be combined in some complicated ways.

The key to modeling problems is practice, you can't at first, but you can determine the type of function immediately after reading a lot of questions. 3 Calculations.

Generally speaking, difficult problems are easy to calculate, and easy problems are complicated. There's nothing to say here, do the math carefully, and then check it with the original question. Some questions related to life can be thought about, is this answer in line with common sense in life?

If it is very different from common sense, you should pay attention, it is likely to be wrong, and the answer given by the questioner will be too weird.

The above is my experience, I don't know how old you are, you can ask me any questions.

PS: Finally, now that many people are bombarding the Olympiad, I don't think I can kill it with a stick. I learned the Olympiad in elementary school, although it was just for fun, but it was very beneficial for my application problems, and it was no problem to do junior high school application problems in elementary school, and this advantage has been maintained until high school.

The above is purely hand-played, please do not copy, thank you

When x minutes, the price is the same for both methods.

x=70 When he plays ** for less than 70 minutes per month, use the first way, and use the second way when he plays more than 70 minutes.

For exactly 70 minutes, you can do both.

If your phone bill is less than 42 yuan, you can do the first one, and if it is more than 42 yuan, you can do the second one.

If he has more than 70 minutes of talk time per month, then use option 2, and if it is less than 70 minutes, use option 1, formula: 21 (

Get x=70

When x<70 selects (1) there is no monthly fee, ** fee per minute when x=70 selects (1) or (2).

When x>70 chooses (2) the monthly rent is 21 yuan, ** fee per minute, which way does he take to save money?

100÷250=

4% off, no loss, no earn.

Ask: At least a few discounts can make a profit, it's not easy to say.

Fold? Fold? Fold?

This question can only be found at least a few folds without losing money.

Set at least x fold.

250x≥100

x≥100÷205

x A: At least 4% off can not lose money.

Within 500 yuan, the total income tax is 500*5%=25

From 500 to 2000, the income tax is 1500 * 10% = 150, and from 2000 to 5000 x yuan is 15% x = 595-25-150 to get x = 2800

The monthly income is 2000 + 2000 + 2800 = 6800

Obviously, 2000 10% = 200 yuan<595 yuan, so the range is 2000-5000

This month's income is 595 15% + 2000 = yuan reference.

Set it to as much as after x minutes.

After 7 minutes, it is small and 217 words: 31*7=21738*x=31*x + 217

x=31

Let Xiao Ya type as much as Xiao Xiao after X minutes.

31*（7+x）=38x

x = 3131 minutes later, two people type the same number of words.

Set x minutes later, two people type the same number of words.

31*7+31x=38x

x=31A: After 31 minutes, two people type the same number of words.