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Multiplying Fractions

Multiplying Fractions. Goals: I can figure out how to solve multiplication problems with fractions in real-world situations.

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Multiplying Fractions

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  1. Multiplying Fractions Goals:I can figure out how to solve multiplication problems with fractions in real-world situations. Standard:MCC5.NF.6: Solve real world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem. Credits:Special thanks to Kelly Katz, for some of the slides in this presentation.

  2. Butterfly Method 1 1 _5_ 12 • _6_ • 10 2 2

  3. Butterfly Method 1 1 _5_ 12 • _6_ • 10 • 1 • 4 = 2 2

  4. Butterfly Method 1 1 _4_ 6 • _3_ • 4 2 1

  5. Butterfly Method 1 1 _4_ 6 • _3_ • 4 • 1 • 2 = 2 1

  6. Butterfly Method 5 1 20 8 _4_ 4 2 1

  7. Butterfly Method 5 1 20 8 4_ 4 5 2 = 2 1

  8. What is wrong with this answer? 52 Which type of fraction is it? Proper Fraction Improper Fraction

  9. Improper Fraction → Mixed Number • Divide the numerator by the denominator • Put the remainder over the denominator Write the remainder over the denominator 2 Divide the numerator by the denominator • R 1 2 • 5 • 2 4 • 1 • 5 • 1 2 = 2 2

  10. Convert the improper fraction to a mixed number: • 7 • 1 • 2 3 3

  11. Convert the improper fraction to a mixed number: • 8 • 2 • 2 3 3

  12. Convert the improper fraction to a mixed number: • 9 • 1 • 4 2 2

  13. Convert the improper fraction to a mixed number: • 11 • 1 • 2 5 5

  14. Convert the improper fraction to a mixed number: If there is no remainder then your answer is a whole number! • 10 • 2 5

  15. Name:__________________Date:____________________Group:_____ I can: demonstrate my knowledge of multiplying fractions! Multiply these fractions (using butterfly method)! • 5 x 4 = 2. 3 * 7 = 8 10 6 9 Multiply (using butterfly method) these fractions and turn your answers into mixed numbers! Don’t forget to simplify! • 3. 2 x 18 = 4.8 x 27 = 5. 12 x 4 = 3 10 9 2 3 Simplify these Fractions! 6.12 = 7. 6 = 24 18 • 8. Cody has 27 marbles. Five-Ninths of the marbles are purple. How many marbles are purple?_______ are purple • 9. How many are not purple? _______ are not purple

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