5.NF.3

5.NF.3 – Interpret a fraction as division of the numerator by the denominator (a/b = a ÷ b). Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers, e.g., by using visual fraction models or equations to represent the problem. For example, interpret 3/4 as the result of dividing 3 by 4, noting that 3/4 multiplied by 4 equals 3, and that when 3 wholes are shared equally among 4 people each person has a share of size 3/4. If 9 people want to share a 50-pound sack of rice equally by weight, how many pounds of rice should each person get? Between what two whole numbers does your answer lie?

Internet Resources (Videos, Websites, etc.)

Illustrative Mathematics Project

  1. Illustrations

Khan Academy

  1. Understanding fractions as division

Learn Zillion

  1. Divide whole numbers by unit fractions using a number line
  2. Divide a whole number by whole number to produce a fraction
  3. Estimate the value of a fraction to the nearest 1/2
  4. Write improper fractions
  5. Write fractions: labeling important information
  6. Place fractions on a number line (3)
  7. Solve division problems that result in fractions: using pictures
  8. Place improper fractions on a number line
  9. Understand numerators and denominators
  10. Solve a division problem by writing a multiplication equation and partitioning the remainder
  11. Express improper fractions as mixed numbers
  12. Write fractions: using pictures
  13. Solve division problems by partioning the whole (lesson 1 of 4)
  14. Solve division story problems by representing the answer as an equal share (lesson 2 of 4)
  15. Solve word problems involving division of whole numbers that lead to fractional answers (Lesson 3 of 4)
  16. Solve word problems involving division of whole numbers that lead to fractional answers (Lesson 4 of 4)

NCTM Illuminations

  1. Another Look at Fractions of a Set
  2. Another Look at the Set Model Using Attribute Pieces
  3. Calculation Nation
  4. Class Attributes
  5. Communicating about Mathematics Using Games
  6. Communicating about Mathematics Using Games: Playing Fraction Tracks
  7. Describing Designs
  8. Eggsactly Equivalent
  9. Eggsactly with Eighteen Eggs
  10. Eggsactly with a Dozen Eggs
  11. Equivalent Fractions
  12. Expanding Our Pattern Block Fraction Repertoire
  13. Exploring the Value of the Whole
  14. Fraction Game
  15. Fraction Models
  16. Fun with Fractions
  17. Fun with Fractions
  18. Fun with Fractions
  19. Inch by Inch
  20. Investigating Equivalent Fractions with Relationship Rods
  21. Investigating Fraction Relationships with Relationship Rods
  22. Investigating with Pattern Blocks
  23. Making and Investigating Fraction Strips
  24. More Fun with Fraction Strips
  25. Numbers and Language
  26. Parts of a Square
  27. Pattern Block Fractions
  28. Playing Fraction Track
  29. Post-Office Numbers
  30. Sports Numbers
  31. Virtual Pattern Blocks

Read Write Think

  1. Picture Book Power: Connecting Children’s Literature and Mathematics

XPMath Game

  1. Converting Mixed Numbers to Improper Fractions

Online Practice from IXL

  1. Fractions and mixed numbers: Fractions review
  2. Divide fractions: Divide fractions by whole numbers

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