The commutative property of addition states that the order in which two numbers are added does not affect their sum. For example:

• $a + b = b + a$

Looking at the options in the image:

1. $6 = 1 + 5$: This does not demonstrate the commutative property.
2. $8 = 0 + 8$: This does not demonstrate the commutative property.
3. $5 + (9 + 2) = (5 + 9) + 2$: This represents the associative property, not the commutative property.
4. $9 + 6 = 6 + 9$: This is the correct answer, as it clearly shows that changing the order of the numbers being added does not change the sum.

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Related Questions:

1. What are other examples of the commutative property of addition?
2. How does the commutative property apply to subtraction or division?
3. Can the commutative property be used for more than two numbers?
4. What is the difference between commutative and associative properties?
5. Why is the commutative property important in mathematics?

Tip:

Always remember that commutativity is about changing the order, whereas associativity is about changing the grouping of numbers!