Current location - Training Enrollment Network - Mathematics courses - The combination rate of multiplication in Unit 4, Lesson 4, Volume 1, Math Exercise in Grade 4.
The combination rate of multiplication in Unit 4, Lesson 4, Volume 1, Math Exercise in Grade 4.
The law of multiplicative association is the arithmetic of multiplication.

Definition: three numbers are multiplied, the first two numbers are multiplied and then multiplied, or the last two numbers are multiplied and then multiplied, and the product is unchanged.

The letter expression of the law of multiplicative association is: a× (b× c) = (a× b )× c