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What are the laws of addition and multiplication in the fourth grade of primary school? What is publishing? And give an example.

Additive commutative law: a+b=b plus A.

Additive associative law: a+b+c=a+(b+c)

Multiplicative commutative law: a*b=b*a

Law of multiplicative association: a*b*c=a*(b*c)

Multiplication and distribution law: (a+b)*c=a times c+b times c.

* means multiplication.