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Chapter 7 Multiply Fractions

Chapter 7 Multiply Fractions. Lesson 7-1: Find Part of a Group. Date. To find a fractional part of a group:. Denominator tells how many equal groups. Numerator tells how many equal groups to circle. “of” means to multiply. or. 2 3. 2 3. 18 =. 18 =. of. X. or. 3 4. 3 4. 3

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Chapter 7 Multiply Fractions

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  1. Chapter 7 Multiply Fractions

  2. Lesson 7-1: Find Part of a Group Date

  3. To find a fractional part of a group: Denominator tells how many equal groups Numerator tells how many equal groups to circle “of” means to multiply or 2 3 2 3 18 = 18 = of X

  4. or 3 4 3 4 3 4 3 4 12 = 12 = 20 = 20 = of X of X or

  5. Test Prep Lesson 7-1 Use your clicker to answer the following question:

  6. Lesson 7-2: Multiply Fractions and Whole Numbers Date

  7. Math Journal Explain how to find 3 of 20 using a model. Include a drawing 4

  8. Martin is planting a vegetable garden. Each row is two meters long. He wants to plant carrots along ¾ of each row. How many meters of each row will he plant with carrots? 3 4 2 = x

  9. Margo was helping clean up after a class party. There were 3 boxes. Remaining with pizza in them. Each box had 3/8 of a pizza left. How much pizza was left in all? 3 8 3 x =

  10. 5 6 2 = x 5 6 3 = x

  11. Test Prep Lesson 7-2 Use your clicker to answer the following question:

  12. Lesson 7-3: Fraction and Whole Number Multiplication Date

  13. Math Journal 3 X 34 Explain how to use models to find Include a drawing

  14. Find the product. 1. Write the whole number as a fraction 3 X 56 2. Multiply the numerators 3. Multiply the denominators 4. Write the product as a mixed number. Then simplify Use a model to solve

  15. Test Prep Lesson 7-3 Use your clicker to answer the following question:

  16. Lesson 7-4: Multiply Fractions Date

  17. 2 3 3 4 X =

  18. 1 3 1 2 X =

  19. 3 5 1 3 X =

  20. 2 3 3 5 X =

  21. Test Prep Lesson 7-4 Use your clicker to answer the following question:

  22. Lesson 7-5: Compare Fraction Factors and Products Date

  23. Math Journal There is 5/8 of a pizza left. Josh eats ¼ of the left over pizza. How much pizza does Josh eat? Describe how to solve the problem using a model. Include a picture of your model

  24. 1 2 2 5 3 4 3 8 3 7 1 3 = = = X X X The product of a fraction and another fraction will be less then either fraction 5 6 2 = x 5 6 3 = x The product of a number greater than 1 and a fraction will be greater than the fraction and less than the whole number.

  25. Test Prep Lesson 7-5 Use your clicker to answer the following question:

  26. Lesson 7-6: Fraction Multiplication Date

  27. Math Journal Explain how you can compare the size of a product to the size of a factor when multiplying fractions, without actually doing the multiplication. Include an example.

  28. Test Prep Lesson 7-6 Use your clicker to answer the following question:

  29. Lesson 7-7: Area and Mixed Numbers Date

  30. Area: the number of square units needed to cover a surface. L X W = A

  31. X 3 4 2 1 34 35 2 1 3 5

  32. X 1 2 2 1 12 34 2 1 3 4

  33. X 1 2 2 1 12 38 2 1 3 8

  34. X 1 9 1 1 23 19 1 1 2 3

  35. Test Prep Lesson 7-7 Use your clicker to answer the following question:

  36. Lesson 7-8: Compare Mixed Number Factors and Products Date

  37. A fraction times a mixed number, the product will be less than the mixed number. X X 4 1 1 13 34 14 23 25 3 2 A whole number (greater than one) times a mixed number, the product will be greater than the mixed number. X A mixed number times a mixed number, the product will be greater than both factors.

  38. X X 2 1 1 1 3 1 34 14 12 15 12 13 78 18 12 14 6 3 2 3 X X X X 18 13 14 15 14 34 1 2 3 1 2 3 Is the product ____________ Is the product ____________ Is the product ____________ Is the product ____________ Is the product ____________ Is the product ____________

  39. Test Prep Lesson 7-8 Use your clicker to answer the following question:

  40. Lesson 7-9: Multiply Mixed Numbers Date

  41. Another Way: Change to improper fraction One Way: Use a Model X X 13 13 = = 14 1 14 1

  42. Simplify using Cross Cancelation X 16 2 12 12 23 13 45 = 1 1 3 = = X X

  43. Multiply using the Distributive Property. X X X X 12 56 3 2 12 14 4 2 45 34 8 = 10 = = =

  44. Test Prep Lesson 7-9 Use your clicker to answer the following question:

  45. Lesson 7-10: Problem Solving: Find Unknown Lengths Date

  46. Test Prep Lesson 7-10 Use your clicker to answer the following question:

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