1. Splash Screen

2. Lesson Menu Five-Minute Check (over Lesson 5–3) Main Idea Example 1:Write and Evaluate Algebraic Expressions Example 2:Write and Evaluate Algebraic Expressions

3. Main Idea/Vocabulary I will evaluate algebraic expressions.

4. Example 1 Write and Evaluate Algebraic Expressions Words Variable Expression y years less than 5 Let y represent how many years less. 5 – y Meera’s age is y years less than 5. Write an expression. In this case, the words less than mean subtraction.

5. 1.A 2.B 3.C 4.D Example 1 B. 10 – d C. 10d The amount of money Shira has is d dollars less than 10. Write an expression. A. – 10 d D. 10 + d

6. Example 2 Write and Evaluate Algebraic Expressions Words Variable Expression half as many colors as Omar Let c represent the number of colors Omar used. c ÷ 2 Amarella used half as many colors as Omar on her poster. If Omar used 8 colors, how many did Amarella use? In this case, half as many means to divide by 2.

7. Example 2 Write and Evaluate Algebraic Expressions c ÷ 2 Write the expression. 8 ÷ 2 Replace c with 8. 4 Divide 8 by 2. Answer: So, Amarella used 4 colors on her poster.

8. 1.A 2.B 3.C 4.D Example 2 A.5 grapes B.7 grapes C.11 grapes D.14 grapes Wilma ate half as many grapes as Lucy. If Lucy ate 14 grapes, how many did Wilma eat?

9. End of the Lesson End Lesson

10. Resources Five-Minute Check (over Lesson 5–3) Image Bank Math Tool Chest Multiplication Expressions

11. 1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 5–3) A.14 B.15 C.16 D.17 Evaluate 3x if x = 5.

12. 1.A 2.B 3.C 4.D Five Minute Check 2 (over Lesson 5–3) A.18 B.19 C.20 D.21 Evaluate 2y if y = 9.

13. 1.A 2.B 3.C 4.D Five Minute Check 3 (over Lesson 5–3) A.60 B.61 C.62 D.63 Evaluate 7y if y = 9.

14. 1.A 2.B 3.C 4.D Five Minute Check 4 (over Lesson 5–3) A.5 + n; 10 eggs B.3 + n; 8 eggs C.5n; 15 eggs D.3n; 15 eggs Write an expression. Then evaluate it. Bill made n omelets. Each omelet requires 3 eggs. If n = 5, how many eggs did Bill use?

15. End of Custom Shows