1. Ch 1-2 Order of Operations
Unit 1
Ch 1-2 Order of Operations

2. Vocabulary:
Evaluate an expression: find the numerical value
Order of Operations Rules:
Simplify expressions inside parenthesis ( )
Simplify any exponents
Do all multiplication and/or division from left to right
Do all addition and/or subtraction from left to right

3. Find the value of each expression:
(divide)
(simplify)
EX 2) 4 (5) – 3
20 – 3 (complete parenthesis)
17 (simplify)

4. Find the value of each expression
[2 + (6 • 8)] – 1
[ ] – 1 (complete parenthesis)
[50] (Add)
(Simplify)
Ex 4:
10 ÷ [9 – (2 • 2)]
10 ÷ [9 – ( 4)] (complete parenthesis)
10 ÷ [5] (complete parenthesis)
(simplify by dividing)

5. Let’s Practice! 53−15 17−13 Find the value of each expression:
6 (2+9) – 3 • 8
53−15 17−13
(answers on next slide!)

6. Let’s check our answers!
Find the value of each expression:
3 + 4 x 5
(multiply)
(simplify)
2) 6 (2+9) – 3 • 8
6 (11) – 3 • 8 (complete parenthesis)
66 – (complete each multiplication)
(simplify)
−13 = (53 +15) ÷ (17-13) (rewrite as division problem)
(68) ÷ (4) (simplify each parenthesis)
(divide)