1. 1.4 The Associative Properties
Objective (things to learn): How to evaluate expressions involving parentheses.
Similar to the commutative property, the associative property only applies to addition and multiplication. It’s easy!!!
Just remember, that with the associative property the grouping symbols can move anywhere without changing the value of the expression.
LOOK
Algebra 1c

2. 1.4 The Associative Properties
Examples
Calculate. 1
(2 + 5)2 = 72
= 49
Recall: Always do parentheses first
(5 2)2 = 102
= 100 . 2
Algebra 1c

3. 1.4 The Associative Properties
Examples
Evaluate each expression. 1
(6x)2 – 10 for x = 1
= (6 1)2 – 10 =
= 36 – 10 = 26 . 2
(10 + y)(x – 3) for y = 2 and x = 5
= (10 + 2)(5 – 3)
= (12)(2)
= 24
Algebra 1c

4. 1.4 The Associative Properties
Examples
Use the associative property to write an equivalent expression. 1
x + (y + z) = (x + y) + z
Recall: The associative property says that you can move the grouping symbols without changing the value of the expression!!!!!! . . . 2
(5 n) m = 5 (nm)
Algebra 1c

5. THE END
Algebra 1c