Where is the environmental application problem to do ah 10

You can go to the Environmental Protection College to do that theme.

Heilongjiang Province is one of the provinces with relatively poor water resources, in order to strengthen the citizens' awareness of water conservation and rational use of resources, all localities have adopted the means of regulation and control to achieve the purpose of water conservation. A city adopts the following charging standards: each household does not exceed 6 cubic meters of water per month, the water fee is charged by yuan cubic meters, more than 6 cubic meters is, no more than part of the ** unchanged, more than part of the charge by yuan cubic meters, if a user in May water fee is 11 yuan, seek the water consumption of the household.

yuan) (11 cubic meters).

6 2 8 (cubic meters).

1Read the following message and do the question as required (6 points).

There was a team of environmental groups that planted trees, and a small team planted 40 trees, which was half of the total number of trees

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 let the speed of A be a kilometer hour and B be b kilometers and hour, 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 km/h and B a speed of 2akmh.

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, this step just reflects whether you have read the question, whether you know what the question requires, and whether you have to stand for the score in the limb test.

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

Analyze each condition and clear your mind.

The person who answers the application question calls the pure formula of the state chain.

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.