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Year 4 equivalent fractions

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Year 4 equivalent fractions

  1. 1. Fractions Lesson 3 Understanding equivalent fractions An interactive Qwizdom lesson
  2. 2. These numbers are called fractions 1 2 3 15 5 6 2 3 4 7 12 22
  3. 3. Today’s lesson looks at Equivalent fractions 3 4 6 8
  4. 4. WALT : to understand equivalent fractions and decide if fractions are equal 3 4 6 8
  5. 5. In the word equivalent there is the root word equal 3 4 6 8
  6. 6. Fractions which are said to be equivalent are equal to each other. 3 4 6 8
  7. 7. For example 1 2 2 4
  8. 8. So if you were given 2 quarters of a cake and your friend was given half a cake would you both have the same amount? 1 2 2 4
  9. 9. Yes! These fractions are equal. 1 2 2 4 These are equivalent fractions.
  10. 10. Can you tell if the following fractions are equal? Are they equivalent fractions ? 1 2 3 6
  11. 11. Yes these fractions are equal. They are equivalent fractions . 1 2 3 6
  12. 12. Are they equivalent fractions ? 2 3 4 6
  13. 13. Yes they are equivalent fractions . 2 3 4 6
  14. 14. Are they equivalent fractions ? 1 4 3 12
  15. 15. Yes they are equivalent fractions . 1 4 3 12
  16. 16. Are they equivalent fractions ? 1 3 2 5
  17. 17. No, they are not equal . They are not equivalent fractions . 1 3 2 5
  18. 18. Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal? 1 4 2 8
  19. 19. Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal? 2 5 4 10
  20. 20. Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal? 1 3 3 9
  21. 21. Use thinking time to discuss. 3 12 1 4
  22. 22. Use thinking time to discuss. 1 2 5 10
  23. 23. What ideas have you come up with? 1 2 5 10
  24. 24. Explain your strategy to the class. 1 2 5 10
  25. 25. There is a relationship between the fractions using dividing and multiplying. 1 4 5 20
  26. 26. What ever you do to the top number . . You must do to the bottom number. 1 4 5 20
  27. 27. What ever you do to the top number . . You must do to the bottom number. 1 5 5 20 divide by 5 divide by 5
  28. 28. What ever you do to the top number . . You must do to the bottom number. 1 2 2 4 divide by 2 divide by 2
  29. 29. What ever you do to the top number . . You must do to the bottom number. 1 4 3 12 divide by 3 divide by 3
  30. 30. What ever you do to the top number . . You must do to the bottom number. 1 5 4 20 divide by 4 divide by 4
  31. 31. What ever you do to the top number . . You must do to the bottom number. 1 4 2 8 divide by 2 divide by 2
  32. 32. What ever you do to the top number . . You must do to the bottom number. 9 15 3 5 multiply by 3 multiply by 3
  33. 33. What ever you do to the top number . . You must do to the bottom number. 4 18 2 9 multiply by 2 multiply by 2
  34. 34. What is the missing number? 2 10 1 5 Click for answer
  35. 35. What is the missing number? 2 4 4 8 Click for answer
  36. 36. What is the missing number? 4 5 32 40 Click for answer
  37. 37. Sometimes you might need to work out equivalent fractions in three steps . 6 8 48 64 3 4 Divide by 8 Divide by 8 Divide by 2 Divide by 2
  38. 38. Sometimes you might need to work out equivalent fractions in three steps . 6 10 48 80 3 ? Divide by 8 Divide by 8 Divide by 2 Divide by 2 What is the missing number? Click for answer 5
  39. 39. Sometimes you might need to work out equivalent fractions in three steps . 6 10 48 80 3 ? Divide by 8 Divide by 8 Divide by 2 Divide by 2 What is the missing number? Click for answer
  40. 40. LO: To revise work equivalent fractions I understand these ideas fully. I have some understanding but I need more practice. I don’t understand these ideas at all and need to work again on this unit of work. A B C
  41. 41. End of slide show

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