Question

describe how the commutative and associative properties of addition can make adding mixed numbers easier.

Answer 1

The commutative property of addition says you can change the order of numbers that are added without changing the sum. ... The addition properties can be used to help simplify expressions. For example, you can use the commutative and associative properties to move terms that are easy to combine together and then add them.

Answer 2

The Commutative Property (changing the order of the numbers) and the Associative Property (changing the order of the additions) are important because they allow us to easily simplify expressions which contain only addition.