Analysis: 2*6 equals 12, where 2 should be 7, 7*6=42, so the correct product is 42. The formula is:

12÷2x7

=6x7

=42

A: The correct product is 42.

Extended data:

Methods of solving application problems in primary schools

1, physical demonstration method

Demonstrate the conditions and problems of mathematical problems and the relationship between them with the physical objects around you, and analyze and think on this basis to find a solution to the problem.

This method can visualize the content of mathematics and concretize the quantitative relationship. For example: the problem of meeting in mathematics. Through physical demonstration, we can not only solve the terms of "simultaneity, relativity and encounter", but also point out the thinking direction for students.

2, graphic method

With the help of intuitive graphics, we can determine the direction of thinking, find ideas and find solutions to problems.

Graphic method is intuitive and reliable, easy to analyze the relationship between numbers and shapes, not limited by logical deduction, flexible and open-minded. However, the graphic method depends on the reliability of human processing and arrangement of representations. Once the graphic method is inconsistent with the actual situation, it is easy to make the association and imagination on this basis appear fallacy or go into misunderstanding, which will eventually lead to wrong results.

3. List method

The method of analyzing, thinking, looking for ideas and solving problems through lists is called list method. List method is clear, easy to analyze and compare, prompt the law, and is also beneficial to memory.

Its limitation lies in the small scope of solution and narrow applicable problems, which are mostly related to finding or displaying rules. For example, "list method" is mostly used in the teaching of positive and negative proportion content, sorting out data, multiplication formula, numerical order and so on.