The formula of multiplication operation law is a×b=b×a, which is also called the nature of multiplication, including exchange law, association law and distribution law. By applying these algorithms, we can simply calculate some multiplication problems. Multiplicative commutative law is the multiplication of two numbers, the position of the exchange factor, and their products are unchanged.

Multiply three numbers, the first two numbers are multiplied and then multiplied, or the last two numbers are multiplied and then multiplied, and the product remains the same. The order of multiplication operations can be changed, and the application of multiplicative associative law in daily life is not extensive, and it mainly plays a simple role in some complicated operations.