Problem-solving skills of quantitative relations

There are two main types of questions in the quantitative relationship part: numerical reasoning and numerical operation.

Digital reasoning includes: arithmetic progression and its variants; The sum of the two items is equal to the third item; Geometric series and its variants; Square and its variants; Cubic types and their variants; Double sequence; Mixed series; Some special arrangement rules and other types. over here

Several ways to solve the problem are as follows:

(1) observation method. This method is suitable for numerical reasoning of various problems (simple and basic). Observation requires candidates to be more sensitive to numbers, so that they can see the type of questions at a glance.

(2) Hypothesis method. Before doing the problem, you should quickly browse the items in the series given in the question, carefully observe and analyze the relationship between the items, and then boldly put forward the hypothesis to find the law between the items in the series from the local breakthrough (usually the first three items). When making assumptions, it is possible that the first assumption can't find the law, which requires candidates to have good psychological quality and quickly change their thinking to make the second assumption.

(3) Mental arithmetic is more than written arithmetic. Writing on paper will waste a lot of time.

(4) Vacancy breakthrough method. Generally speaking, if the vacancy item is at the end, the law should be deduced from beginning to end. If the vacancy comes first, the opposite is true. If the vacant item is in the middle, it depends on the number of items on both sides. Generally, it is deduced from one end with more projects, and then extended to one end with fewer projects for verification.

(5) Easy first, then difficult. Candidates may be aware of this. When doing simple questions, candidates sometimes suddenly have difficult ideas. At the same time, this method can also stimulate the potential of candidates to play on the spot.

Mathematical operations include: proportional distribution problem; Sum, multiple and difference problems; Mixed solution problem; Planting trees; There are more than ten kinds of budget problems. The author also summarizes the general solutions to these more than ten problems as follows:

(1) rounding method. This method is the most commonly used method in simple operation. It is much simpler to use exchange rate and combination law to turn numbers into integers and then calculate them.

(2) Benchmark method. When two or more numbers are added, you can find an intermediate number as a benchmark, and then add or subtract the difference between each addend and the benchmark number to get their sum.

(3) The method of finding hidden rules. Candidates should remember that almost every mathematical operation problem in the national civil service recruitment examination has ingenious solutions, and these solutions are implicit laws. Finding these rules will get twice the result with half the effort.

(4) Summarize and generalize. Candidates should fully summarize when doing simulation questions. Only in this way can we draw inferences in the examination room and enhance our confidence in winning.

(5) Master common skills. Master common problem-solving skills, such as exclusion and comparison. Mastering these objective problem-solving skills will help candidates choose correct answers quickly and accurately, thus improving the efficiency of answering questions.