1. Math Journal 8-14
Evaluate the expressions for:
a = 3, b = 5, c = -5, d = -2
−4𝑎𝑏𝑐 𝑑

2. Unit 1 day 4: Evaluating Expressions with PEmdas
Essential Questions: What order do you follow to evaluate an expression?

3. P arenthesis E xponents M ultiplication D ivision A ddition S
Order of Operations
Mathematicians have established an order of operations to evaluate an expression involving more than one operation. P
arenthesis E
xponents M
ultiplication
from left to right D
ivision A
ddition
from left to right S
ubtraction

4. Example 1 a) 32 – 16 + 2 b) 15 •2 ÷ 6 c) 12 + 6 ÷ 3 – 2 d) 7 • 4

5. Evaluate the expressions when a = 2, b = -3, and c = -6.
Example 2
Evaluate the expressions when a = 2, b = -3, and c = -6.
a) a + bc b) c) 2c b
3c • 2a c
3c • 2a c

6. Example 3
You and four friends decided to order pizzas. Each pizza costs $9.00. You order 3 pizzas and everyone gets a soda for $1.50 each. If you want to split the bill evenly, how much will each person pay?
9(3) (5) 5 5
34.50 5
$6.90 per person

7. Summary
Essential Questions: What order do you follow to evaluate an expression?
Use 1 minute to write 2 sentences answering the essential questions.