Answer
Express the associative property of addition in words: When you add numbers, the answer will be the same regardless of how the numbers are grouped together.
Work Step by Step
The associative property comes from the word associate or "group". The theorem mathematically is shown as
(3+4)+5 = 3+(4+5), or, in words, which 2 (or more) numbers are added together first does not change the final answer.