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What are the 2 rules for adding and subtracting integers? Find the difference .

Warm-up Date 09/21/09 Sec 2-2 Subtracting Rational #s. What are the 2 rules for adding and subtracting integers? Find the difference . Date 09/21/09 Sec 2-3 Multiplying and Dividing Rational Numbers. Goal:. To multiply rational numbers To divide rational numbers.

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What are the 2 rules for adding and subtracting integers? Find the difference .

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  1. Warm-up Date 09/21/09 Sec 2-2 Subtracting Rational #s • What are the 2 rules for adding and subtracting integers? • Find the difference.

  2. Date 09/21/09 Sec 2-3 Multiplying and Dividing Rational Numbers

  3. Goal: • To multiply rational numbers • To divide rational numbers

  4. …And Why To find the change in temperature with an increase in altitude, as in example 3.

  5. Key Concepts: Example: Example: Example: Identity Property of Multiplication Multiplication Property of Zero Multiplication Property of –1

  6. Key Concepts: Rules for Multiplying and Dividing Real Numbers If the signs are the same:the answer is positive. If the signs are the different:the answer is negative.

  7. Simplify each expression.

  8. Simplify each expression.

  9. Is the following statement true or false? Be able to justify your answer! False

  10. Evaluate each expression.

  11. Did we achieve our goal? • To multiply rational numbers • To divide rational numbers

  12. On-Line Help Web Site: PHSchool.com Tutor Web Code: ate-0203 Lesson Quiz Code:ata-0203

  13. Planner: • Write today’s goal. • Write today’s assignment.

  14. Assignment: • Pg 73 2 – 56 e, 74, 86 – 90 e, 102 – 114 e • Reflective Journal

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