Welcome to Interactive Chalkboard Mathematics: Applications and Concepts, Course 2 Interactive Chalkboard Copyright © by The McGraw-Hill Companies, Inc. Developed by FSCreations, Inc., Cincinnati, Ohio 45202 Send all inquiries to: GLENCOE DIVISION Glencoe/McGraw-Hill 8787 Orion Place Columbus, Ohio 43240 Welcome to Interactive Chalkboard

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Example 1 Evaluate Expressions Example 2 Evaluate Expressions Example 3 Evaluate Expressions with Powers Example 4 Evaluate Expressions with Powers Example 5 Evaluate an Expression Example 6 Use an Expression to Solve a Problem Lesson 3 Contents

Add first since 18 + 2 is in parentheses. Evaluate Add first since 18 + 2 is in parentheses. Subtract 20 from 27. Answer: 7 Example 3-1a

Evaluate Answer: 16 Example 3-1b

Evaluate Multiply 5 and 3. Add 15 and 15. Subtract 2 from 30. Answer: 28 Example 3-2a

Evaluate Answer: 15 Example 3-2b

Evaluate Find the value of . Multiply. Answer: 120,000 Example 3-3a

Evaluate Answer: 9,000 Example 3-3b

Subtract 1 from 3 inside the parentheses. Evaluate Subtract 1 from 3 inside the parentheses. Find the value of . Divide. Answer: 7 Example 3-4a

Evaluate Answer: 4 Example 3-4b

Multiply from left to right, Evaluate . Add 4 and 2. Multiply from left to right, Multiply from left to right, Subtract from left to right, Add 2 and 16. Answer: 18 Example 3-5a

Evaluate Answer: 9 Example 3-5b

Use the table shown below Use the table shown below. Taylor is buying two video game stations, five extra controllers, and ten games. What is the total cost? Item Quantity Unit Cost game station 2 $180.00 controller 5 $24.95 game 10 $35.99 Example 3-6a

number of game stations cost of game station number of controllers number of games cost of game cost of controller 2 $180 5 10 $35.99 $24.95 Multiply from left to right. Add. Example 3-6a

Answer: So, the total cost is $844.65. Check Check the reasonableness of the answer by estimating. The cost is about (2  200) + (5  25) + (10  40) = 400 + 125 + 400, or about $925. The solution is reasonable. Answer: So, the total cost is $844.65. Example 3-6a

Use the table shown below Use the table shown below. Suzanne is buying a video game station, four extra controllers, and six games. What is the total cost? Item Quantity Unit Cost game station 1 $180.00 controller 4 $24.95 game 6 $35.99 Answer: $495.74 Example 3-6b

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