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Identity and Commutative Properties Answer Key

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Property Identification
#1 0 + 2 = 2 Identity Property of Addition
#2 1 x 3 = 3 Identity Property of Multiplication
#3 5 + 4 = 4 + 5 Commutative Property of Addition
#4 10 + 9 + 2 = 9 + 2 + 10 Commutative Property of Addition
#5 5 x 2 x 3 = 3 x 2 x 5 Commutative Property of Multiplication
Multiplication
#1 5 x 0 = ? 0
#2 10 x 10 =? 100
#3 5 x 5 = ? 25
#4 6 x 9 =? 54
#5 12 x 5 =? 60
Definitions
#1 What is the identity property of addition? When the number zero is added to another number or another number is added to the number zero, that number remains unchanged.
#2 What is the identity property of multiplication? When the number one is multiplied by another number or another number is multiplied by the number one, that number remains unchanged.
#3 What is the commutative property for addition? An order property, changing the order of the addends does not change the order of the sum.
#4 What is the commutative property for multiplication? An order property, changing the order of the factors does not change the product.
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Final Question
Give an example of the Identity and Commutative Property. Teacher will check to see if the answer is right.