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8-11 Dividing Fractions
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8-11 Dividing Fractions

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  • Transcript

    • 1. 8-11 Dividing Fractions Number Sense 2.4
    • 2. Definition: Reciprocal a mathematical expression or function so related to another that their product is one
    • 3. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 2
    • 4. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 x 2 2 1
    • 5. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 x 2 = 2 2 1 2
    • 6. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 x 2 = 2 = 2 1 2 1
    • 7. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 x 2 = 2 = 2 1 2 1 The reciprocal is usually the “flip” of the fraction.
    • 8. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 x 2 = 2 = 2 1 2 1 1 The reciprocal is usually 2 the “flip” of the fraction.
    • 9. Definition: Reciprocal a mathematical expression or function so related to another that their product is one 1 x 2 = 2 = 2 1 2 1 2 The reciprocal is usually 1 the “flip” of the fraction.
    • 10. Skill: Finding the Reciprocal 1 3 12 2 4 15 7 4 70 9 5 100
    • 11. Skill: Finding the Reciprocal 1 3 12 2 4 15 The reciprocal is usually the “flip” of the fraction. 7 4 70 9 5 100
    • 12. Skill: Finding the Reciprocal 2 3 12 1 4 15 The reciprocal is usually the “flip” of the fraction. 7 4 70 9 5 100
    • 13. Skill: Finding the Reciprocal 2 4 12 1 3 15 The reciprocal is usually the “flip” of the fraction. 7 4 70 9 5 100
    • 14. Skill: Finding the Reciprocal 2 4 15 1 3 12 The reciprocal is usually the “flip” of the fraction. 7 4 70 9 5 100
    • 15. Skill: Finding the Reciprocal 2 4 15 1 3 12 The reciprocal is usually the “flip” of the fraction. 9 4 70 7 5 100
    • 16. Skill: Finding the Reciprocal 2 4 15 1 3 12 The reciprocal is usually the “flip” of the fraction. 9 5 70 7 4 100
    • 17. Skill: Finding the Reciprocal 2 4 15 1 3 12 The reciprocal is usually the “flip” of the fraction. 9 5 100 7 4 70
    • 18. Example 1 3 ÷ 1 = 7 2
    • 19. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 ÷ 1 = 7 2
    • 20. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 ÷ 2 = 7 1
    • 21. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 ÷ 2 = 7 1 STEP TWO: Multiply instead of divide.
    • 22. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 x 2 = 7 1 STEP TWO: Multiply instead of divide.
    • 23. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 x 2 = 7 1 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators.
    • 24. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 x 2 = 6 7 1 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators.
    • 25. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 x 2 = 6 7 1 7 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators.
    • 26. Example 1 STEP ONE: Find the reciprocal of the divisor. 3 x 2 = 6 7 1 7 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators. STEP FOUR: Simplify your answer if necessary.
    • 27. Example 2 6 ÷ 3 = 1 4
    • 28. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 ÷ 3 = 1 4
    • 29. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 ÷ 4 = 1 3
    • 30. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 ÷ 4 = 1 3 STEP TWO: Multiply instead of divide.
    • 31. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 1 3 STEP TWO: Multiply instead of divide.
    • 32. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 1 3 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators.
    • 33. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 24 1 3 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators.
    • 34. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 24 1 3 3 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators.
    • 35. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 24 1 3 3 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators. STEP FOUR: Change the improper fraction into a mixed #.
    • 36. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 24 1 3 3 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators. STEP FOUR: Change the improper fraction into a mixed #.
    • 37. Example 2 STEP ONE: Find the reciprocal of the divisor. 8 6 x 4 = 24 3 24 1 3 3 24 0 STEP TWO: Multiply instead of divide. STEP THREE: Multiply the numerators and the denominators. STEP FOUR: Change the improper fraction into a mixed #.
    • 38. Example 2 STEP ONE: Find the reciprocal of the divisor. 6 x 4 = 24 1 3 3 STEP TWO: Multiply instead of divide. 8 STEP THREE: Multiply the numerators and the denominators. STEP FOUR: Change the improper fraction into a mixed #.