Properties

___ + 5 = 5 + 9

• 9
• 19
• 14
• -9

(5 + 3) + 2 = 5 + (3 + 2)

• Commutative  Addition
• Commutative Multiplication
• Associative Addition
• Associative Multiplication

This property tells us that when we change the order of numbers when we are adding, the answer does not change.  

• Commutative Addition
• Commutative Multiplication
• Associative Addition
• Associative Multiplication

3 + (12 + 8) = 3 + (8 + 12) 

• Associative Addition 
• Associative Multiplication 
• Commutative Addition 
• Commutative Multiplication 

Find an equivalent expression using the associative property:
7 + ( 8 + 9)

• 7 + 8 + 9
• 8 + ( 7 + 9)
• (7 + 8 ) + 9
• 7 + 10

Rewrite (9 x 6) x 5 using the associative property.

• 270
• 9 x 30
• 9 x (6 x 5)
• 5 x 9 + 5 x 6

The Identity property tells us that any number multiplied by 1 is that number.  Which expression below is an example of this property?

• 2x0=0
• 2x2=4
• 2+1=3
• 2x1=2

Tags

CCSS.3.OA.B.5

Are the expressions equivalent and what property is used?

7 x 1 and 7

• Yes, Commutative Property

• Yes, Associative Property

• Not equal

• Yes, Identity Property of Multiplication

98 + 0 = 98
The sum of any number and zero is itself.

• Identity Property of Multiplication
• Commutative Property of Addition
• Associative Property of Addition
• Identity Property of Addition

Which property of addition does 4 + 0 = 4 illustrate?

• Identity Property

• Distributive Property

• Zero Property

• Commutative Property