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Which property: (2 + 3) + 4 = 2 + (3 + 4)

Step by step, with the reason for every step · Number properties for mental math · Foundations

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

Your turn

Try this one yourself, then check:

Which property is this: (8 + 5) + 3 = 8 + (5 + 3)
Show the answer
associative property of addition

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