Is it helpful for elementary school students to do more application problems in junior high school?

It is helpful to do more questions, the key is to cultivate the ability to analyze and solve problems in the problem.

In junior high school, you will learn to use equations to solve problems, and it seems that the set learned in primary school will not work, but in fact, there is no good foundation in primary school, and it will be difficult to list equations in junior high school.

In addition, after completing the question, it is necessary to analyze, summarize different question types and commonly used solution methods, and really summarize it, there are not many question types, so there are not many questions, the key is to be refined, the same question type, it is necessary to do some to consolidate and skill, and the effect is not obvious.

All practical questions: nothing more than the following basic knowledge, master it well, and you will be handy in doing the questions.

1.Commonly used basic formulas:

Number of copies per copy of the total.

Multiples Multiples Multiples of multiples.

Speed time distance.

Unit price, quantity, total price.

Productivity: Working hours, Total amount of work.

Add the number of additions and.

Factor Factor product.

The dividend is the divisor quotient.

Fraction of Fraction = Unit 1

2.Profit and loss issues.

Profit and loss) The difference between the two distributions The number of shares participating in the distribution.

3.Encounters and catch-up problems.

The distance traveled by the encounter speed and the time of the encounter.

Chase distance, speed difference, chase time.

Flowing Water Problems: Downstream Velocity Hydrostatic Velocity Water Velocity Flow.

4.Concentration issues.

The weight of the solute The weight of the solvent The weight of the solution.

The weight of the solute is 100% concentrated by the weight of the solution.

5.Profit vs. discount issues.

Profit, Sell Price, Cost.

Profit Margin Profit Cost 100% (Sell Price Cost 1) 100%.

The amount of change and the percentage of the change in the principal.

Discount Actual selling price 100% of original selling price (Discount 1.)

Interest, Principal, Interest Rate, Time.

6.The problem of tree planting on non-closed routes can be divided into the following three situations:

If trees are to be planted at both ends of the non-enclosed line, then: number of trees Number of segments 1 Full length Plant spacing 1

If trees are to be planted at one end of the non-enclosed line, and not at the other end, then: the number of plants, the number of segments, the full length, and the distance between the plants.

If no trees are planted at both ends of the unenclosed line, then: Number of Plants Number of Segments 1 Full Length Plant Spacing 1

7.Graphical calculation formulas.

Circumference, area, side length of a square, triangle, trapezoidal, circle.

Long volume, surface area, side area of a cube, cylinder, cone.

8. Unit conversion of length, area, volume (volume), weight, RMB, time, etc.

I am in favor of doing more practical problems, which not only exercises children's reading comprehension skills, but also exercises their logical thinking skills.

The application questions of each chapter are nothing more than a number of different types of questions, the main thing is to master these, and to draw inferences from one another, integrate them, and have solid basic knowledge, so that any problem can be easily solved. I wish you success and send it on.

The practical questions are still very important, and as the grade increases, the difficulty will also increase, so it is still necessary to practice.

It's a little bit useful, I'm going to middle school soon, I think, it's a little bit useful.

In addition to solving the problem, you need to write a solution to the equation, and other problems do not need to be solved, but don't forget to write an answer, otherwise you will be deducted points.

Elementary school students must write solutions or answers when writing application problems, which is the most basic rule for doing problems.

If primary school students are solving equations, they must write the solution, which means that they can directly list the equation when doing application problems. You don't need to write a solution, this is perfectly fine, but if you are solving an equation, you have to write a solution.

It depends. If you use an equation solution, you have to write it, and you can do without a columnar solution.

It must be in junior high school.

Elementary school students do practical problems, use equation solutions to write solutions, and arithmetic methods do not write solutions.

Yes. Strictly speaking, no matter what kind of math problem you do, you have to write the word "solution".

Elementary school students do not need to write solutions if they use arithmetic methods to do practical problems. Only when solving problems with column equations, and when writing sentences, you should write the solution words.

You don't need to write, you have to start writing and interpreting words from junior high school, and you can calculate directly in elementary school.

Elementary school students do not need to write solutions to solve problems, except when they understand equations or when they solve problems with column equations.

For the application problems in elementary school, they are generally not written and solved. At the beginning, I wrote the answers, and then when I was in junior high school, I slowly changed it to a solution, and now this is according to the teacher's requirements, and the teacher tells you to write how you want to write.

Hello, at present, you don't need to write "solution" to do application problems in primary school, you need to solve equations.

If an elementary school student writes it, his format is more important, so the sister must write it.

I think elementary school students should write a solution to the application problems, I remember when I was a child in elementary school, the teachers required us to write a solution to these application problems.

If you're in elementary school, if you remember correctly, the application questions are all written and answered, and the application problem writing solution is only required in junior high school.

A little bit of experience in solving the application problem:

2. Clever unknowns. Several quantities can be set as unknown in a worksheet, but which one is easier should be carefully considered. For example:

The ratio of the velocity of A and B is 3:2, and when finding the velocity of A and B, we can set the speed of A as a kilometer hour and B as B kilometers and hour as B kilometers, which is a system of binary linear equations; Or let the velocity of A be a kilometer-hour, then B is 2 3a kilometer-hour, so that although it is a one-dimensional equation, there are fractions; Or let A have a speed of 3a kilometers per hour and B a speed of 2a kilometers per hour.

It can be seen that the last one tries to be the best. Unknowns are set according to different topics.

3. List equations according to the equiquantity relationship.

4. Solve equations. At this time, we may encounter two unknowns, and we can only list one equation, we need to see if there are still implicit conditions, such as the number of people and the number of objects, all of which must be positive integers, which are implicit conditions, especially in inequality equations. There is also the need to test the root of fractional equations.

5. Write down the unit and answer. This step is often overlooked, but in fact, it is a reflection of whether you have read the question, whether you know what the question requires, and whether you have to stand for marks in the exam.

6. Practice diligently, practice makes perfect. Touching the analogy bypass, drawing inferences from one another.

This is my personal little heart circle for docking application questions, I hope it will help you. A little bit of experience.

1. Fill-in-the-blank questions.

1.Regular fill-in 5 6 8 11 ()21;() option 13 15 18 20 Solution and reason.

2.There are three plots of grass The grass grows at a certain rate Ten thirds of the area is ten fourteen The first block is enough for 12 cows to eat for four weeks The second block is enough for 21 cows to eat for nine weeks Q The third block is enough for how many cows to eat for 18 weeks ?

If you think about the problems in elementary school, I'll help you solve them.

There is a pool of water at the bottom of which springs up continuously. To drain the pool of water. 10 pumps need to pump for 8 hours. 8 pumps need to pump for 12 hours, if you use 6 pumps, how many hours do you need to pump?

Please put the following proportions.

There are now 7 cups placed face up on the table, and two of the different cups can be turned at the same time at a time. Q: Can I make all the cups face down at the end?

Ask if there are m cups, the mouth of the cup is facing up, turn n at a time, so that the mouth of the cup is facing down, and ask if it can be turned x times so that the mouth of the cup is all facing down?

There is a pasture that is overgrown with grass and grows at a uniform rate every day. The grass in this pasture can feed 27 cows for 6 weeks, or 23 cows for 9 weeks, and how many weeks can feed 21 cows?

There is a rectangular wooden block with a length of 72 cm, a width of 60 cm, and a height of 48 cm, and now you want to see it into some identical small cubes, and there are no remaining wooden blocks, what is the maximum edge length of these small cubes?

One person rides from A to B, and the other drives from B to A, and they meet on the road, who is closer to A at this time?

Fill in the 9 numbers from 1 to 9 into the 3*3 square, so that the sum of each horizontal row, each column, and each oblique row is left, what is the maximum edge length of these small cubes?

1.There are 6 sheep that can eat the grass in 21 days, 9 sheep that can eat the grass in 30 days, and how many sheep can eat the grass in 10 days?

2.There is a 400-metre circular playground, A and B start from A and B respectively, their speed is 20 m and 25 m, they go in the same direction, how many times do they meet?

1.One man was riding a bicycle from A to B while the other was driving from B to A, and on the way they met. Do you know who is closer to the aland at this time?

2.Fill in the 9 numbers from 1 to 9 into the 3*3 square, so that the sum of each horizontal row, each column, and each diagonal row is 15.

A pool, two pipes of A and B are filled in 5 hours, two pipes of B and C are filled in 4 hours, B is opened separately for 6 hours, and two pipes of A and C are opened for another 2 hours (B is closed) and then filled, how many hours can B be filled separately?

Known, unknown, and sought.

1 Write down the main points when writing your answers.

2 The roll should be clean.

3 Don't forget to write "A".

The name of the organization.

A: Pay attention to the transformation of unit one.

Accurate in arithmetic.

Don't forget to write "A:" before answering the question;

There is a little trick to answering the question completely, such as asking the question at the end: "How many people are in class six (7)?" It can be like this: "Answer: There are 31 students in Class Six (7). ”