The types of primary school mathematics application problems, ideas and methods to solve primary school mathematics application problems. The application problems of primary school mathematics are often the application of concepts and formulas, and the calculation methods of square, parallelogram, triangle and trapezoid areas.

The concept of (1) score is the key to solve the application problem of score and percentage, and the choice of standard quantity "1" is the breakthrough.

(2) Engineering problems

The relationship among workload, work efficiency and working hours should be clarified in engineering problems.

(3) Travel problems

On the surface, it is to examine students' understanding of the relationship between distance, time and speed. From a deeper perspective, it is actually to examine students' flexibility, because not only distance = time × speed, but also time, place, direction and many other factors need to be considered.

(4) the problem of concentration

This kind of topic requires understanding the relationship: solution = solute+solvent; Concentration = solute/solution; Solution = solute/concentration, etc. Geometry problems in Xiao Sheng's early exams.

The problems of area and volume mainly consider the following contents: How to get the calculation formula of parallelogram area? How to calculate the area of triangle and trapezoid? What about the formula for calculating the area of a circle? Think about how the square area is calculated. Why? What is the surface area of three-dimensional graphics? How to calculate the surface area of a cuboid? Is there any simple way to solve this kind of problem? How to calculate the surface area of a cylinder? What are the similarities between a cuboid and a cylinder?

Cylinder (cone) problem: know the bottom, side and height of the cylinder; Know the bottom and height of the cone. If you want to know the unfolded figure of the cylinder's side, know the calculation method of the lateral area and surface area of the cylinder, you can calculate the lateral area and surface area of the cylinder, use the calculation method flexibly according to the actual situation, and know the approximate method. Statistical problems in routine examination of junior high school

Simple statistical tables, charts, and learning to calculate averages and percentages are all preliminary knowledge of statistics.

In statistical work, in addition to sorting data, it can also be represented by statistical tables, and sometimes it can also be represented by statistical charts. There are three kinds of common statistical charts: bar statistical charts; Broken line statistical chart; Department statistical chart.

To understand the statistical chart and clarify its characteristics and functions, it is necessary to go through the process of collecting and sorting out data, representing data with statistical charts and sorting out results. According to the statistical chart drawn, we can analyze some simple facts reflected by the data, make some simple reasoning and judgment, and further understand that statistics is a strategy and method to solve practical problems.