Commutative, Identity, and Associative Property of Addition

Commutative, Identity, and Associative Property of Addition

Commutative Property of Addition

• The addends may switch back and forth

• Example: 3+2=5 2+3=5

• Example: 3+2=2+3

Identity Property of Addition

• When you add 0 to a number, the number will remain the same.

• Example: 3+0=3

Associative Property of Addition

• Addends may be grouped in different ways, but if the addends are the same then the sum will be the same.

• These have parenthesis. Do the parenthesis first.

• Example:  (2+1)+3= 2+(1+3)

Multiple Choice

Which is an example of the Identity Property?

• 2+3=3+2

• (2+1)+3 = 2+(1+3)

• 2 + 2 =4

• 0 + 3 = 3

Multiple Choice

Which is an example of the Associative Property?

• 9 + 0 = 9

• (1+9)+2 = 1+ ( 2+9)

• 6 + 6 = 12

• 4 + 5 = 5 + 4

Multiple Choice

Which is and example of the Commutative Property?

• 6 + 7 = 13

• 6 + 7 = 7 + 6

• 0 + 8 = 8

• (1 + 4) + 5 = (5 + 1) + 4

Poll

Which Property is this an example of:

8 + 7 = 7 + 8

• Commutative

• Identity

• Associative

Poll

Which Property is this an example of:

(9 + 1) + 2 = 1 + (2 + 9)

• Communtative

• Associative

• Identity

Poll

Which Property is this an example of:

9 + 0 = 9

• Commutative

• Associative

• Identity