Properties of Addition

Properties of Addition

Properties are rules about numbers that are always true.

There are three main properties of addition:

• Commutative (Order)

• Associative (Grouping)

• Identity (Zero)

Let's talk about the Commutative Property of Addition first!

Commutative Property of Addition - Changing the order of two addends does not change the sum.

Next, let's talk about the Associative Property of Addition!

Associative Property of Addition - Changing the grouping of three or more addends does not change the sum.

Last one! Let's learn about the Identity Property of Addition!

Identity Property of Addition - When you add zero to any addend, the sum will always equal the addend.

Let's check to see if you can remember what you learned.

:)

Multiple Choice

3 + 4 = 7 is the same as 4 + 3 = 7. Which property does this demonstrate?

• Commutative Property

• Associative Property

• Identity Property

Multiple Choice

0 + 8 = 8. Which property does this demonstrate?

• Associative Property

• Identity Property

• Commutative Property

Multiple Choice

(5 + 6) + 4 = 15 is the same as 5 + (6 + 4) = 15. Which property does this demonstrate?

• Commutative Property

• Identity Property

• Associative Property

Poll

On a scale of 1-3, how confident do you feel about your knowledge of the Properties of Addition?

• 1 (not great...I need more help)

• 2 (I kind of get it)

• 3 (I'm rocking this)