Mathematics high score answering skills 1. Breakthrough selection
Multiple-choice questions occupy half of the country in the exam, and the answer to multiple-choice questions will directly affect the planning of the whole test paper, so how to improve the efficiency of answering multiple-choice questions in a short time is a realistic problem that we can't avoid. So how to break through multiple-choice questions?
Breakthrough multiple-choice questions mainly include: option characteristics, quick calculation skills of multiple-choice questions, characteristics and solutions of multiple-choice questions, and special conclusions of some common multiple-choice questions.
2. Breakthrough operation
Operation is the cornerstone of solving problems in the examination room, and it is basically impossible to solve problems until the end. It is estimated that most senior three students have some operational problems, but they can't improve, because this is recognized as the "foundation" and no one has any information to explain. If so, many problems put together are the main reasons why many students have been unable to improve their operation.
The test site of NMET mathematics confusion is 1. When doing the operations of intersection, union and complement of sets, don't forget the special cases of complete sets and empty sets, and don't forget to solve them with the help of number axis and venn diagram.
2. When applying conditions, A can easily ignore the empty set.
3. Will you solve related problems with the idea of complement set?
4. What's the difference between a simple proposition and a compound proposition? What is the relationship between the four propositions? How to judge the necessary and sufficient conditions?
You know the difference between "no proposition" and "negative form of proposition"
6. It is easy to ignore the principle of domain priority when solving problems related to functions.
Direct election method of spike skills in mathematics multiple-choice questions in college entrance examination-simple and intuitive
This method is generally suitable for simple topics that basically do not need "transformation" or reasoning. These topics mainly examine candidates' memory and understanding of physical recitation content, and belong to common sense topics. The general examination syllabus requires first-level content.
Special value law and extreme value law-opportunism
It is difficult to directly judge whether the number of options is right or wrong, so some physical quantities can be tested one by one by taking special values or extreme values that meet the conditions of the topic. Any option that is proved to be incorrect by the test of special value or extreme value must be wrong and can be ruled out. This method can often save strict logical reasoning or complicated mathematical proof.
Substitution method-get twice the result with half the effort
For some computational multiple-choice questions, the answers given in the topic options can be directly substituted into the test, or substituted into the test at a certain stage of the calculation process, which can often effectively reduce the amount of mathematical operations.