1. Splash Screen

2. Main Idea and Vocabulary Key Concept: Order of Operations
Example 1: Use Order of Operations
Example 2: Use Order of Operations
Example 3: Use Order of Operations
Example 4: Use Order of Operations
Example 5: Real-World Example
Lesson Menu

3. Evaluate expressions using the order of operations.
numerical expression
order of operations
Main Idea/Vocabulary

4. KC

5. Use Order of Operations
Evaluate 27 – (18 + 2).
27 – (18 + 2) = 27 – 20 Add first since is in parentheses.
= 7 Subtract 20 from 27.
Answer: 7
Example 1

6. Evaluate 45 – (26 + 3).
A. 16
B. 22
C. 42
D. 74
Example 1

7. Use Order of Operations
Evaluate ● 3 – 2.
● 3 – 2 = – 2 Multiply 5 and 3.
= 30 – 2 Add 15 and 15.
= 28 Subtract 2 from 30.
Answer: 28
Example 2

8. Evaluate 32 – 3 ●
A. –1
B. 15
C. 125
D. 207
Example 2

9. Use Order of Operations
Evaluate 12 × 3 – 22.
12 × 3 – 22 = 12 × 3 – 4 Find the value of 22.
= 36 – 4 Multiply 12 and 3.
= 32 Subtract 4 from 36.
Answer: 32
Example 3

10. Evaluate 9 ×
A. 51
B. 54
C. 126
D. 514
Example 3

11. Use Order of Operations
Evaluate 28 ÷ (3 – 1)2.
28 ÷ (3 – 1)2 = 28 ÷ 22 Subtract 1 from 3 inside the parentheses.
= 28 ÷ 4 Find the value of 22.
= 7 Divide.
Answer: 7
Example 4

12. Evaluate 36 ÷ (14 – 11)2.
A. 3
B. 4
C. 6
D. 9
Example 4

13. MONEY Julian is buying one box of favors, one box of balloons, and three rolls of crepe paper. What is the total cost?
Example 5

14. 1  7 + 1  5 + 3  2 = 7 + 5 + 6 Multiply from left to right. ×
number of favors
cost of favors
number of balloons
number of crepe paper
cost of crepe paper
cost of balloons + 1 $7 3 $2 $5 × +
1    2 = Multiply from left to right.
= 18 Add.
Answer: So, the total cost is $18.
Example 5

15. What is the total cost of two boxes of favors, two boxes of balloons, and six rolls of crepe paper?
Example 5

16. End of the Lesson