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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 784 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 77505 =
  2. 2.Digital root of 88 × 57 =
  3. 3.Digital root of 17436 =
  4. 4.Digital root of 24437 =
  5. 5.Digital root of 86598 =
  6. 6.Digital root of 70073 =
  7. 7.Digital root of 18 × 55 =
  8. 8.Digital root of 3715 =
  9. 9.Digital root of 19 × 18 =
  10. 10.Digital root of 82378 =
  11. 11.Digital root of 14 × 59 =
  12. 12.Digital root of 90 × 54 =
  13. 13.Digital root of 46978 =
  14. 14.Digital root of 90 × 80 =
  15. 15.Digital root of 74477 =
  16. 16.Digital root of 29 × 89 =
  17. 17.Digital root of 47848 =
  18. 18.Digital root of 40017 =
  19. 19.Digital root of 37998 =
  20. 20.Digital root of 9629 =
  21. 21.Digital root of 80 × 89 =
  22. 22.Digital root of 58599 =
  23. 23.Digital root of 60520 =
  24. 24.Digital root of 5268 =
  25. 25.Digital root of 49037 =
  26. 26.Digital root of 59185 =
  27. 27.Digital root of 83988 =
  28. 28.Digital root of 64687 =
  29. 29.Digital root of 25542 =
  30. 30.Digital root of 27 × 16 =
  31. 31.Digital root of 82 × 12 =
  32. 32.Digital root of 30510 =
  33. 33.Digital root of 77493 =
  34. 34.Digital root of 95284 =
  35. 35.Digital root of 32 × 58 =
  36. 36.Digital root of 27037 =
  37. 37.Digital root of 94 × 51 =
  38. 38.Digital root of 22778 =
  39. 39.Digital root of 53631 =
  40. 40.Digital root of 69222 =

Answer key

  1. 6
  2. 3
  3. 3
  4. 2
  5. 9
  6. 8
  7. 9
  8. 7
  9. 9
  10. 1
  11. 7
  12. 9
  13. 7
  14. 9
  15. 2
  16. 7
  17. 4
  18. 3
  19. 9
  20. 8
  21. 1
  22. 9
  23. 4
  24. 3
  25. 5
  26. 1
  27. 9
  28. 4
  29. 9
  30. 9
  31. 3
  32. 9
  33. 3
  34. 1
  35. 2
  36. 1
  37. 6
  38. 8
  39. 9
  40. 3

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