1. Properties of Addition and Multiplication
Pre-Algebra 2-1

2. Commutative Property
Commutative Property of Addition--changing the order in which you add does not change the sum.
So,
More Examples:

3. Commutative Property
Commutative Property of Multiplication--changing the order in which you multiply numbers doesn’t change the product.
So,
More Examples:

4. Associative Property
Associative Property of Addition--changing the way the numbers are grouped does not change the sum.
Add parenthesis to show Associative Property
So,

5. Associative Property
Associative Property of Multiplication--changing the way the numbers are grouped does not change the product.
Add parenthesis to show
Associative Property

6. Identity Property
Identity Property of Addition--if you add zero to a number, you get the same number!
0 is called the identity of addition!!

7. Identity Property
Identity Property of Multiplication--if you multiply a number by 1, you get the same number!
1 is called the identity of multiplication!!

8. Identify the Property Commutative Prop. Of Multiplication
Identity Prop. Of Addition
Associative Prop. Of Addition
Identity Prop. Of Multiplication