(1) Simple application problem: an application problem that only contains a basic quantitative relationship or is solved by one-step operation, usually called a simple application problem.

(2) Steps to solve the problem:

A understand the meaning of the question: understand the content of the application question and know the conditions and problems of the application question. When reading a question, read, think and understand the meaning of every sentence in the question without losing words or adding words. You can also repeat the conditions and questions to help you understand the meaning of the questions.

B selection algorithm and column calculation: this is the central work to solve application problems. Starting with what to say and ask, according to the given conditions and questions, and connecting with the significance of four operations, this paper analyzes the quantitative relationship, determines the algorithm, answers and marks the correct unit name.

C test: according to the conditions and problems of the application questions, check whether the listed formulas and calculation processes are correct and whether they meet the meaning of the questions. If mistakes are found, correct them immediately.

2. Composite application problems

(1) An application problem that consists of two or more basic quantitative relations and is solved by two or more operations is usually called a compound application problem.

(2) An application problem of two-step calculation of three known conditions.

Find an application problem that is greater than (less than) the sum of two numbers.

Application problem of comparing the relationship between the difference and multiple of two numbers.

(3) An application problem in which two known conditions are calculated in two steps.

Know the difference (or multiple relationship) between two numbers and one of them, and find the sum (or difference) of the two numbers.

Knowing two numbers and one of them, find the difference (or multiple relationship) between the two numbers.

(4) Solve the application problem of multiplication and division.

(5) Solve the application problem of three-step calculation method.

(6) Solving the application problem of decimal calculation: the application problem of addition, subtraction, multiplication and division of decimal calculation is basically the same as the formal application problem, except that there are decimals among the known numbers or unknowns.

Answer: According to the calculation results, give an oral answer first, and then gradually transition to a written answer.

(7) Solve the problem of addition application:

An application problem of finding the total number: what is the known number A, what is the number B, and what is the sum of the two numbers A and B.

Find a number greater than the number. Application problem: Know what A number is, how much more B number is than A number, and find what B number is.

(8) Solve the application problem of subtraction:

A Finding the residual application problem: removing a part from the known number and finding the residual part.

The application problem of finding the difference between two numbers by -b: Given the numbers of A and B, find how much A is more than B, or how much B is less than A. ..

The application of c to find the number less than the number: what is the known number a, how much is the number b less than the number a, and how much is the number B.

(9) Solve the problem of multiplication application:

An application problem of seeking the sum of common addends: knowing the same addend and the number of the same addend, find the sum.

The application problem of finding the multiple of a number is: how many times is one number, how many times is another number, and how much is another number?

(10) to solve the problem of division application;

A divide a number into several parts on average, and find out how much each part is: know a number, divide it into several parts on average, and find out how much each part is.

B. Find an application problem, in which one number contains several other numbers: given a number, how many copies are there in each number, and how many copies can you find?

C the application problem of finding a number that is several times that of another number: given the number A and the number B, finding a larger number is several times that of a smaller number.

D know how many times a number is, and find the application problem of this number.

(1 1) Common quantitative relations:

Total price = unit price × quantity

Distance = speed × time

Total amount of work = working time × working efficiency

Total output = single output × quantity