1. Splash Screen

2. Key Concept: Order of Operations
Five-Minute Check
CCSS
Then/Now
New Vocabulary
Key Concept: Order of Operations
Example 1: Evaluate Algebraic Expressions
Example 2: Evaluate Algebraic Expressions
Example 3: Real-World Example: Use a Formula
Lesson Menu

3. Evaluate (12 – 9)3.
A. 3
B. 9
C. 27
D. 729
5-Minute Check 1

4. Simplify 5(4 + n) + 6n. A. 7n + 20 B. 10n + 5 C. 11n D. 11n + 20
5-Minute Check 2

5. A. B. C. D.
5-Minute Check 3

6. Which expression represents the area of a rectangle with length 2x and width x?
A. 4x2
B. 4x
C. 2x2
D. 2x
5-Minute Check 5

7. Mathematical Practices
Content Standards
A.SSE.1.a Interpret parts of an expression, such as terms, factors, and coefficients.
A.SSE.1.b Interpret complicated expressions by viewing one or more of their parts as a single entity.
Mathematical Practices
1 Make sense of problems and persevere in solving them.
CCSS

8. You used the rules of exponents.
Use the order of operations to evaluate expressions.
Use formulas.
Then/Now

9. algebraic expressions order of operations formula
variables
algebraic expressions
order of operations
formula
Vocabulary

10. Concept

11. Evaluate (x – y)3 + 3 if x = 1 and y = 4.
Evaluate Algebraic Expressions
Evaluate (x – y)3 + 3 if x = 1 and y = 4.
(x – y)3 + 3 = (1 – 4)3 + 3 x = 1 and y = 4
= (–3)3 + 3 Subtract 4 from 1.
= – Evaluate (–3)3.
= –24 Add –27 and 3.
Answer: –24
Example 1

12. Evaluate f + g2 – 3g if f = 5 and g = 2.
B. 4
C. 6
D. –3
Example 1

13. Evaluate the numerator and the denominator separately.
Evaluate Algebraic Expressions
x = 5, y = –2, and z = –1
Evaluate the numerator and the denominator separately.
Multiply in the numerator.
Simplify the numerator and the denominator. Then simplify the fraction.
Answer: –9
Example 2

14. A. Evaluate a + b2(a – b) if a = 4 and b = –2.
C. 24 28
Example 2a

15. B.
A. –1
B. –3
C. 3 4
Example 2b

16. Use a Formula
Example 3

17. Answer: The area of the trapezoid is 152 square meters.
Use a Formula
Answer: The area of the trapezoid is 152 square meters.
Example 3

18. A. 450 cm3
B. 75 cm3
C. 50 cm3
D. 10 cm3
Example 3

19. End of the Lesson

20. Assignment for Section 1.1:
Pages 7 – 9
#’s: 11 – 16, 18 – 25, 43