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What is the math information in the second volume of the second grade math exercise, and talk to your classmates?
Multiplication and division.

The meaning of mathematical information refers to the meaning of information in the field of mathematics, that is to say, these information are closely related to mathematics, and people can understand the connotation of mathematics through these information. This information may also be news related to mathematics or information about some interesting things, from which we can learn some information other than mathematical figures and science.