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### Course: 3rd grade (Eureka Math/EngageNY)>Unit 1

Lesson 3: Topic C: Multiplication using units of 2 and 3

# 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.
• 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
• 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.
• What is the difference between Commutative law of multiplication and Commutative property of multiplication?
• Commutative law of multiplication and Commutative property of multiplication are exactly the same thing. In math, a law is the same as a property.

Have a blessed, wonderful day!
• how do i do this
• Basically, the commutative property of multiplication is that no matter the order of the factors, the product will always be the same. For example, 5x2 has the same product as 2x5. Hope this helps!
• I love angry cats!!
• me too!
• who am I ?
• Good progress