tricks of math

Here are some tips for solving elementary math problems: ** Arithmetic class of the first and fourth rules ** 1. ** Clear the relationship between the four operations ** - This was the key to solving the four arithmetic problems. For example, in a division algorithm, the relationship between the dividends, the divisions, the quotient, and the remainder must be clear (dividends = divisions x quotient + remainder). If you encounter a problem like "() div5 = 6... 4", you must be able to determine that the dividends in the parenthesis represent the dividends. According to the relationship, the dividends are calculated as 5×6 + 4=34. ** 2. Problem Solvers ** 1. ** Confirm the quantity in the question and the quantity required ** - Seeking the price, the total amount of work, the amount of each portion, and the distance were common test points. For example, in the itinerary problem, one had to be clear about whether the time, speed, or distance given in the question was time, speed, or distance. Then, one had to solve the question according to the relationship of "speed x time = distance,""distance/speed = time,""distance/time = speed," and so on. For example, if Xiao Ming walked 10 minutes to school every day and walked 50 meters per minute, 10 minutes was time and 50 meters was speed. To find the distance from Xiao Ming's home to school (distance), 50×10 = 500 meters. - When it came to money, one had to distinguish between the original price, current price, cost price, selling price, and other concepts. Combined with the reality of life, one had to find an equivalent relationship to solve it. 2. ** Practically ** - Some abstract mathematical concepts could be understood through practical operations. For example, in the first grade, the students could understand the advance rate of yuan, angle and minute by strengthening the practical operation; in the middle grade, the practical operation could reduce the confusion of concepts when teaching circumference and area; in the senior grade, the use of Quissonite wood strips or counting boards to guide the operation could reduce the difficulty of learning. 3. ** Seeking answers from everyday life ** - To connect mathematics knowledge with daily life. For example, in the "direction identification" teaching, create a scene of direction identification in daily life, introduce new lessons, let students solve practical problems in the simulated street, explore new directions, and then use the knowledge they have learned to solve the direction problems in life, such as judging the direction of the surrounding children, drawing the zoo map, etc. 4. ** Simply simplify the problem and find conditions from the problem ** - Experience and understand mathematics in real life situations. For example, according to the situation of the teacher's daughter drinking milk, she would propose a mathematical problem and solve it according to the amount of milk she drank each time, so as to understand the knowledge of "moving more to make up for less." - Independent thinking, independent exploration, and cooperation and communication are encouraged. For example, in the teaching of finding the average, after the teacher raised the question, the students would discuss it in small groups to find the relationship between the number of the applied questions. - The content of the lessons should come from daily life, using data and questions from daily life, such as average scores, average height, seasonal water consumption, etc., to make students feel that mathematics was right beside them. 5. ** Cultivate application awareness and problem solving skills ** - Using his life experience, he could apply the mathematics knowledge he had learned to his daily life. For example, in the car rental problem, 27 people could take a car. One car could take 8 people, and the other car could take 4 people. First, a variety of car rental plans were given, and then according to the rent of different cars (the first car was 300 yuan/day, the second car was 200 yuan/day), which plan cost the least. 6. ** Searching for patterns from problems ** - For some numbers, such as 50, 98, 38, 10, and 51, the size relationship between them was described in terms of larger, smaller, much larger, and much smaller, and represented by " He could also use some daily estimations to understand the rules, such as how thick 1200 pieces of paper were, how many classes 1200 students could form, how long 1200 steps were, and so on. ** 3. Mathematical Olympiad category ** 1. ** The problem of crossing the bridge by train and sailing by water ** - He had to grasp the specific relationship of such problems. For example, when a train crossed a bridge, the length of the train itself had to be taken into account; when sailing on water, the speed in the water = ship speed + water speed, and the speed against the water = ship speed-water speed. 2. ** Concentration problem ** - He had to distinguish the concepts of solute, solution, and solution. Solute is something that is put into a liquid (it may be a solid or a liquid), the solution is water (liquid), and the solution is a mixture of solute and the solution. ** 4. Solution Skills ** 1. ** Drawing Method ** - For some sum and difference problems, drawing could make the abstract problem graphic and easy to understand. For example, the sum of two numbers is 81, and the difference between the two numbers is 19. You can draw a line diagram and represent the decimals and large numbers with line segments. According to the difference being 19 and the sum being 81, you can first find the decimals as (81 - 19) div2 = 31 and the large numbers as 31+19 = 50. 2. ** Techniques for solving equations ** - When solving an equation, such as the equation "80-(x + 2) div3 =76", the complex parts could be regarded as a whole. First, he calculated 80 minus 76, which gave (x + 2) div3 = 4. Then, he calculated x + 2 = 12, which gave x = 10. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Share these math tricks with your classmates during group study sessions. Teaching others also helps you to better master the application of these tricks in different types of math problems.

One way is by using real - life stories in math problems. For example, when teaching addition, we can create a story like 'John has 3 apples and he gets 2 more. How many apples does he have now?' This makes math more relatable and easier to understand for students.

Chapter 16, "Tricks! These Are All Tricks!", is the clearest early answer because it turns Wang Teng's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Wang Teng walked into the classroom. and follows through with He coughed awkwardly and said, "Don't talk nonsense if you don't have....

There were many examples of "evil ways" in the reference materials. From a literary point of view, there was a novel called "The Way of Evil". This was an urban romance novel written by the novel writer Xu Mi. The plot was full of ups and downs, and it was exciting. The plot included the main character encountering a car full of ghosts at the age of 20. It was common for him to encounter ghosts and demons. In order to survive, he had to learn Taoist skills from the unreliable Taoist priest, who was a dried corpse. Not only did he have to face demons and ghosts, but there were also ten kings of hell who wanted to take his life. In addition, the word "evil" was also reflected in other concepts, such as viewing Chinese medicine as evil (this was a misunderstanding of Chinese medicine by foreigners, because there were many aspects of Chinese medicine that could not be explained by modern science), and some evil co-branding (such as Happy Twisted Numb and Grave Robber's Chronicles, which was described as a combination of evil and fantasy). The novel "The Corpse Fighter" is equally exciting. Everyone is welcome to click and read it!