12 ÷ 4 = 3 12 = 4 x 3 - PowerPoint PPT Presentation

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12 ÷ 4 = 3 12 = 4 x 3
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12 ÷ 4 = 3 12 = 4 x 3

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  1. How can we use what we know about multiplying positive and negative integers to solve a division problem? 12 ÷ 4 = 3 12 = 4 x 3

  2. In this lesson you will learn rules for dividing positive and negative integers by using the inverse relationship between multiplication and division.

  3. x -4 = -20 -6 x (-3) = +18

  4. Even though we are dividing two negative integers, the answer is not negative. -12 ÷ -4 = + 3

  5. What do we mean by the inverse of multiplication and division? 3 x 5 = 15 15 ÷ 3 = 5 15 ÷ 5 = 3

  6. Think about inverse relationship 18 ÷ 3 = ? 6 = 18 3 x ? 18 ÷ 6 = 3

  7. Think about inverse relationship -2 x 5 = -10 -10 ÷ 5 = -2 -10 ÷ -2 = +5

  8. Think about inverse relationship -16 ÷ 8 = ? -2 = -16 8 x ? -16 ÷ 8 = -2

  9. Think about inverse relationship -3 x -4 = +12 +12 ÷ -3 = -4 +12 ÷ -4 = -3

  10. Think about inverse relationship -20 ÷ (-4) = ? +5 = -20 ? -4 x -20 ÷ -4 = +5

  11. In this lesson you have learned the rules for dividing positive and negative integers by using the inverse relationship between multiplication and division.

  12. Find the quotient: -30 ÷ 6 = -28 ÷ (-4) = -5 7

  13. Without solving determine if the answer is positive or negative

  14. Find the Quotient: -12 ÷ 4 = -40 ÷ (-10)= -27 ÷ (-9) = -10 ÷ 5 =