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Chapter 1.5 1.6

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Chapter 1.5 1.6

  1. 1. Warm up 1.5 Subtract 1. – 6 – ( -4) 2. - 3 – 3 3. 4 – ( - 5) Evaluate the expression 4. 9 – s for s = - 5 5. - 4 – w + 5 for w = 21
  2. 2. 1.6 Multiplying and1.6 Multiplying and Dividing IntegersDividing Integers
  3. 3. Multiplying and Dividing two integers If the signs are the same, the sign of the answer is positive. If the signs are different, the sign of the answer is negative.
  4. 4. True or False ????? If a product is negative, then there must be an odd number of negative factors in the expression. If a quotient is negative, there must be an even number of positive factors in the numerator and denominator combined.
  5. 5. Example 1: multiply or divide 1. -8(-9) 4. 2. 7(-7) 5. 3. -9(3)(-2) 6. 32 8− − − 42 7 −72 8
  6. 6. Example 2: Simplify 1. -5(3 + 7) 2. 9(8 – 20) 3. -8(-5-5)
  7. 7. Example 3: Evaluate 1. -3t – 5 for t = 3 2. -x + 5 for x = -9
  8. 8. Warm up 1.6 Multiply or Divide 1. -8(4) 2. Simplify 3. -2(13-4) 4. 6(-5 – 3) 5. 6(s + 9) for s = -1 − − 12 5 10 ( )

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