If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Associative property of multiplication review

Review the basics of the associative property of multiplication, and try some practice problems.

What is the associative property?

The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product.
Example:
$5×4×2$
Let's start by grouping the $5$ and the $4$ together. We can evaluate the expression step by step.
$\phantom{=}\left(5×4\right)×2$
$=20×2$
$=40$
Now let's group the $4$ and the $2$ together.
$\phantom{=}5×\left(4×2\right)$
$=5×8$
$=40$
Regrouping does not change the answer!

Practice

Problem 1
Which expressions are equivalent to $\left(9×2\right)×5$ ?

Want to try more problems like this? Check out this exercise.

Want to join the conversation?

• The problem is that I sometimes get confused and the answer is wrong
• Its okay just keep trying and you'll get it done in under 30 seconds. =D
• why did it put the answer for the wrong equation if he made the mistake in step 2 the answer should of been 80, 80 was the correct answer
• y=-3 0(-3)+(-7) 8,345.271
• why was it so easy love it
• why did it push me back when I went to another Question It is very hard why
• how do u find the answer
• i am not getting this a little bit
• The questions are easy if you do them more and more.