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Transparency 4. Click the mouse button or press the Space Bar to display the answers. Splash Screen. Example 4-5b. Objective. Multiply Integers. Example 4-5b. Vocabulary. None. Example 4-5b. Multiply Integers. 2. Different Signs. Same Sign. Negative Answer. Positive Answer.

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  1. Transparency 4 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 4-5b Objective Multiply Integers

  4. Example 4-5b Vocabulary None

  5. Example 4-5b Multiply Integers 2. Different Signs • Same Sign Negative Answer Positive Answer 3  -4 = -12 -3  4 = -12 3  4 = 12 -3  -4 = 12

  6. Lesson 4 Contents Example 1Multiply Integers with Different Signs Example 2Multiply Integers with Different Signs Example 3Multiply Integers with Same Signs Example 4Multiply Integers with Same Sings Example 5Use Integers to Solve a Problem

  7. Example 4-1a Write problem Draw arrows to signs 9  ( - 6 ) Identify signs Opposite Signs Multiply numbers without signs 9  6 - 54 Opposite signs , negative answer Answer: –54 1/5

  8. Example 4-1b Answer: –28 1/5

  9. Example 4-2a Write problem Draw arrows to signs - 5  7 Identify signs Opposite Signs Multiply numbers without signs 5  7 Opposite signs , negative answer - 35 Answer: –35 2/5

  10. Example 4-2b Answer: –24 2/5

  11. Example 4-3a Write problem Draw arrows to signs 7  9 Identify signs Same Signs Multiply numbers without signs 7  9 Same signs, positive answer + 63 Answer: 63 3/5

  12. Example 4-3b Answer: 20 3/5

  13. Example 4-4a Write problem Draw arrows to signs - 4  ( - 8 ) Identify signs Same Signs Multiply numbers without signs 4  8 + 32 Same signs, positive answer Answer: 32 4/5

  14. Example 4-4b Answer: 14 4/5

  15. Example 4-5a ELEVATORS An elevator takes passengers from the ground floor of a shopping mall down to the underground parking garage. If it travels at a rate of 5 feet per second, where will it be in relation to the ground floor after 2 seconds? To find the location of the elevator after 2 seconds, you can multiply 2 by the amount of change per second, –5 feet. 2  ( - 5 ) 5/5

  16. Example 4-5a 2  ( - 5 ) Write problem Draw arrows to signs Opposite Signs Identify signs 2  5 Multiply numbers without signs - 10 Opposite signs , negative answer Answer: –10 feet 5/5

  17. Example 4-5b * INVESTMENTS Mr. Green has invested in a stock whose price is decreasing at a rate of $3 per day. What will be the change in the price of the stock after 5 days? Answer: –$15 5/5

  18. End of Lesson 4

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