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Main Idea and New Vocabulary

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Presentation on theme: "Main Idea and New Vocabulary"— Presentation transcript:

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2 Main Idea and New Vocabulary
Key Concept: Division Property of Equality Example 1: Solve Multiplication Equations Example 2: Solve Multiplication Equations Example 3: Real-World Example: Solve a Multiplication Equation Key Concept: Multiplication Property of Equality Example 4: Solve Division Equations Example 5: Real-World Example: Solve a Division Equation Lesson Menu

3 Solve one-step multiplication and division equations.
coefficient formula Main Idea/Vocabulary

4 Key Concept

5 Solve Multiplication Equations
Solve 39 = 3y. Check your solution. 39 = 3y Write the equation. Division Property of Equality 13 = y Simplify. Answer: The solution is 13. Check 39 = 3y Write the original equation. ?  39 = 3(13) Replace y with 13. 39 = 39 The sentence is true. Example 1

6 Solve 21 = 3z. Check your solution.
A. 63 B. 24 C. 8 D. 7 Example 1 CYP

7 Solve Multiplication Equations
Solve −4z = 60. Check your solution. –4z = 60 Write the equation. Division Property of Equality z = –15 60 ÷ (–4) = –15 Answer: The solution is –15. Check –4z = 60 Write the original equation. ?  –4(–15) = 60 Replace z with –15. 60 = 60 The sentence is true. Example 2

8 Solve 12x = 36. Check your solution.
A. 3 B. 4 C. 24 D. 48 Example 2 CYP

9 Solve a Multiplication Equation
MAIL Serena mailed 138 letters during the last 6 days. On average, how many letters did she mail each day? Example 3

10 Solve a Multiplication Equation
138 = 6ℓ Write the equation. Division Property of Equality 23 = ℓ 138 ÷ 6 = 23 Answer: Serena mailed 23 letters each day. Example 3

11 PIZZA The student council has $175 for a pizza party
PIZZA The student council has $175 for a pizza party. Pizzas cost $7 each. How many pizzas can they buy? A. 22 pizzas B. 24 pizzas C. 25 pizzas D. 32 pizzas Example 3 CYP

12 Key Concept

13 Solve Division Equations
Write the equation. Multiplication Property of Equality m = –20 –10 ● (2) = –20 Answer: The solution is –20. Example 4

14 Solve A. –1 B. 7 C. –7 D. –12 Example 4 CYP

15 Solve a Division Equation
DISTANCE The distance d that Lance travels on his bike at a rate of 20 miles per hour for 4 hours is given by the equation How far did he ride? Write the equation. Multiplication Property of Equality d = ● 4 = 80 Answer: Lance rode 80 miles. Example 5

16 DISTANCE Kevin is driving an average rate of 60 miles per hour
DISTANCE Kevin is driving an average rate of 60 miles per hour. He has been driving for 2 hours. The distance he has traveled is given by the equation How far has Kevin driven? A. 120 miles B. 62 miles C. 60 miles D. 30 miles Example 5 CYP

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