Step by step
The question
Question: which property is this: (2 + 3) + 4 = 2 + (3 + 4)?
(2 + 3) + 4 = 2 + (3 + 4)
1 Compare the two sides
Look at both sides.
The brackets moved.
the brackets moved
So it is the associative property of addition.
= associative property of addition
2 Check
Let's check: work out both sides.
The left side is 9.
The right side is 9.
Both the same.
So the answer is right!
(2 + 3) + 4 = 9, 2 + (3 + 4) = 9
Let's look back.
First: compare the two sides.
Last: check.
Answer
= associative property of addition