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Subtraction with regrouping

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This basic video gives viewers tips on when to regroup.

Published in: Education
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Subtraction with regrouping

  1. 1. Subtraction with Regrouping By: Kathrina Russell-Stubbs
  2. 2. Q: What is regrouping? A: Regrouping or burrowing is a word which we use to take ten from one number to give to another. We do this when we do not have enough to subtract two numbers.
  3. 3. Q: How do you know when to regroup? A: You know its time to regroup when the number you are subtracting is larger than the number which you are subtracting from.
  4. 4. Here are some examples. 2 5 - 1 8 5 cannot take away 8. So we must burrow from the 2. 1 15
  5. 5. Here are some examples. 5 1 - 4 9 1 cannot take away 9. So we must burrow from the 5. 4 11
  6. 6. Let’s Play a Game! Should you regroup? Click Yes or No. Continue
  7. 7. Should we burrow? Click Yes or No. 6 9 - 5 6 Yes No Help!
  8. 8. Should we burrow? Click Yes or No. 6 9 - 5 6 Yes No
  9. 9. Think: 9 – 6. Do you have enough? 9 - 6 Continue
  10. 10. Correct Continue
  11. 11. Correct Continue
  12. 12. Incorrect Continue
  13. 13. Incorrect Continue
  14. 14. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No Help!
  15. 15. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No Help!
  16. 16. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No Help!
  17. 17. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No Help!
  18. 18. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No
  19. 19. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No
  20. 20. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No
  21. 21. Should we burrow? Click Yes or No. 4 6 - 1 8 Yes No
  22. 22. Think: 6 – 8. Do you have enough? 6 - 8 Continue
  23. 23. Think: 6 – 8. Do you have enough? 6 - 8 Continue
  24. 24. Think: 6 – 8. Do you have enough? 6 - 8 Continue
  25. 25. Think: 6 – 8. Do you have enough? 6 - 8 Continue
  26. 26. Correct Continue
  27. 27. Incorrect Continue
  28. 28. Correct Continue
  29. 29. Incorrect Continue
  30. 30. Correct Continue
  31. 31. Incorrect Continue
  32. 32. Correct Continue
  33. 33. Incorrect
  34. 34. Let’s Recap! How do we know when to burrow? When the number we are subtracting is larger than the number we are subtracting from. 3 6 - 2 7 ___ 2 16 90
  35. 35. See you next time!
  36. 36. Let’s Recap! How do we know when to burrow? When the number we are subtracting is larger than the number we are subtracting from. 3 6 - 2 7 ___ 2 16 90
  37. 37. See you next time!
  38. 38. Let’s Recap! How do we know when to burrow? When the number we are subtracting is larger than the number we are subtracting from. 3 6 - 2 7 ___ 2 16 90
  39. 39. See you next time!
  40. 40. Let’s Recap! How do we know when to burrow? When the number we are subtracting is larger than the number we are subtracting from. 3 6 - 2 7 ___ 2 16 90
  41. 41. See you next time!
  42. 42. Let’s Recap! How do we know when to burrow? When the number we are subtracting is larger than the number we are subtracting from. 3 6 - 2 7 ___ 2 16 90
  43. 43. See you next time!
  44. 44. Let’s Recap! How do we know when to burrow? When the number we are subtracting is larger than the number we are subtracting from. 3 6 - 2 7 ___ 2 16 90
  45. 45. See you next time!

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