Problem: (2 + 3) + 6 = 2 + 9 = 11
Recall the associative property of addition
The associative property states that how numbers are grouped does not change their sum.
Apply the property
(2 + 3) + 6 = 2 + (3 + 6)
Calculate both sides
Left side: (2 + 3) + 6 = 5 + 6 = 11
Right side: 2 + (3 + 6) = 2 + 9 = 11
Conclusion
The sum is the same, so this demonstrates the associative property of addition.