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Lesson 5: Commutative property of multiplication

# Commutative property of multiplication

Sal explores what happens when we multiply numbers in different orders, for example 3x5 and 5x3.

## Want to join the conversation?

• Are there any other operations besides multiplication that are commutative?
• Addition is commutative, but subtraction and division are not.
• Hi can I have 10 vote me want badge
• If you can tell me how I will
• why cats plus I have a cat that looks like that
• Cats are the meaning of life, the universe and everything in between. Without cats, the universe would not exist. According to The Cat Theory by Albert Einstein cats are supposed to be acknowledged at least 24 times a day. Thats why the mean cats were present in the video.
• I feel sorry for anyone who has that many angry math cats.
• yeah I do to.
• Hi can I have vote pls me want badge
• yes you can dude
• would it work the same way for three numbers that are being multiplied?
• Yes, it will work with three or more numbers. As long as it is all multiplication or addition
• Its funny you use angry cats for the equation.
• im a cat and i can say i do everything myself
• how do we repersent the communitive property of multipication
• The commutative (moving) property of multiplication can most simply be changing places, so 3*2=2*3. We can also use it to our advantage such as 4*4*5, 16*5 is slightly harder to do than 4*5*4 = 20*4=80. 3*6*7, 18*7 is a lot harder than 3*7*6=21*6 which can be done as 20*6+1*6.
we can represent it as a*b=b*a or a*b*c = (a*c)*b.