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Fractions – Dividing – Complete Lesson

Fractions – Dividing – Complete Lesson Preview the presentation to check ability-level, AFL questions, and the animations during demonstrations. It is recommended to delete slides /sections not needed for your class. Printing. To print handouts from slides -

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Fractions – Dividing – Complete Lesson

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  1. Fractions – Dividing – Complete Lesson Preview the presentation to check ability-level, AFL questions, and the animations during demonstrations. It is recommended to delete slides/sections not needed for your class.

  2. Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts - Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

  3. 8 ÷2 x4 -5 x2 x5 ÷2 +1 2 ?? ÷10 +8 ÷7

  4. 01 March 2019 Dividing Fractions

  5. KNOWLEDGE CHECK

  6. KNOWLEDGE CHECK

  7. A yellow cup is the size of the bottle. Jack pours out of the water in the bottle into come cups. How many cups can Jack fill? We can ask: How many in ? Jack can fill 4 cups.

  8. How do we describe this calculation? “How many 3s in 6?”

  9. How do we describe this calculation? “How many s in 6?”

  10. How do we describe this calculation? “How many s in 3?”

  11. Draw diagrams in your book to help you with these calculations. Is there a pattern to help you with the calculations?

  12. Draw diagrams in your book to help you with these calculations. Is there a pattern to help you with the calculations?

  13. How many eighths go into one quarter? 2 eighths go into one quarter.

  14. How many sixths go into one third? 2 sixths go into one third.

  15. How many sixths go into two thirds? 4 sixths go into two thirds.

  16. How many eighths go into three quarters? 6 eighths go into three quarters.

  17. How many three-eighths go into three quarters? 2 three-eighths go into three quarters.

  18. How many two-eighths go into three quarters? 3 two-eighths go into three quarters.

  19. How many thirds • go into one quarter? 3 quarters of one-third go into one quarter.

  20. How many two-thirds • go into four-fifths? 10 1 and two-tenths of two-thirds go into four-fifths.

  21. Draw diagrams in your book to help you with these calculations

  22. Answers • Draw diagrams in your book to help you with these calculations

  23. Is Anna right? “ ÷ is the same as x 4 ”

  24. Reciprocals are opposite. Multiplication is the opposite of division. 4 is the same as

  25. 4 is the same as What are the reciprocals of these numbers?

  26. 4 is the same as What are the reciprocals of these numbers?

  27. Remember! Dividing is the same as multiplying by the reciprocal. • Change the sign. • Flip the divisor. • KEEP • CHANGE • FLIP

  28. Remember! Dividing is the same as multiplying by the reciprocal. • Change the sign. • Flip the divisor. • KEEP • CHANGE • FLIP

  29. Remember! Dividing is the same as multiplying by the reciprocal. • Change the sign. • Flip the divisor. • KEEP • CHANGE • FLIP

  30. Remember! Dividing is the same as multiplying by the reciprocal. • Change the sign. • Flip the divisor. • KEEP • CHANGE • FLIP

  31. A method to remember for dividing fractions! • KEEP • CHANGE • FLIP

  32. A method to remember for dividing fractions! • KEEP • CHANGE • FLIP

  33. A method to remember for dividing fractions! • KEEP • CHANGE • FLIP

  34. A method to remember for dividing fractions! • KEEP • CHANGE • FLIP

  35. A method to remember for dividing fractions! • KEEP • CHANGE • FLIP

  36. Your Turn! Example • KEEP • CHANGE • FLIP • KEEP • CHANGE • FLIP

  37. Your Turn! Example • KEEP • CHANGE • FLIP • KEEP • CHANGE • FLIP

  38. Your Turn! Example • KEEP • CHANGE • FLIP • KEEP • CHANGE • FLIP

  39. Your Turn! Example • KEEP • CHANGE • FLIP • KEEP • CHANGE • FLIP

  40. Your Turn! Example • KEEP • CHANGE • FLIP • KEEP • CHANGE • FLIP

  41. Your Turn! Example • KEEP • CHANGE • FLIP • KEEP • CHANGE • FLIP

  42. Example • KEEP • CHANGE • FLIP

  43. Example • KEEP • CHANGE • FLIP Answers

  44. Dividing Fractions Dividing Fractions 1) 1) b) b) a) a) d) d) c) c) 2) 2) b) b) a) a) d) d) c) c) f) f) e) e)

  45. Dividing Fractions 1) b) a) d) c) 2) b) a) d) c) f) e)

  46. Dividing Fractions 1) b) a) d) c) 2) b) a) d) c) f) e) Answers

  47. Check your success! I can divide whole numbers by fractions. I can divide fractions by fractions. I can use a reciprocal to make division calculations easier.

  48. Check your success! I can divide whole numbers by fractions. I can divide fractions by fractions. I can use a reciprocal to make division calculations easier.

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