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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 395 · 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 53 × 97 =
  2. 2.Digital root of 87366 =
  3. 3.Digital root of 60083 =
  4. 4.Digital root of 6793 =
  5. 5.Digital root of 74309 =
  6. 6.Digital root of 31 × 89 =
  7. 7.Digital root of 97960 =
  8. 8.Digital root of 97361 =
  9. 9.Digital root of 45 × 74 =
  10. 10.Digital root of 59587 =
  11. 11.Digital root of 69693 =
  12. 12.Digital root of 95420 =
  13. 13.Digital root of 95440 =
  14. 14.Digital root of 7198 =
  15. 15.Digital root of 51 × 82 =
  16. 16.Digital root of 79 × 54 =
  17. 17.Digital root of 86674 =
  18. 18.Digital root of 11595 =
  19. 19.Digital root of 31388 =
  20. 20.Digital root of 10157 =
  21. 21.Digital root of 81055 =
  22. 22.Digital root of 61470 =
  23. 23.Digital root of 86 × 95 =
  24. 24.Digital root of 58 × 57 =
  25. 25.Digital root of 69 × 61 =
  26. 26.Digital root of 42587 =
  27. 27.Digital root of 74 × 82 =
  28. 28.Digital root of 72 × 54 =
  29. 29.Digital root of 75164 =
  30. 30.Digital root of 63 × 47 =
  31. 31.Digital root of 41 × 13 =
  32. 32.Digital root of 74525 =
  33. 33.Digital root of 47 × 61 =
  34. 34.Digital root of 43 × 48 =
  35. 35.Digital root of 98309 =
  36. 36.Digital root of 74165 =
  37. 37.Digital root of 52 × 41 =
  38. 38.Digital root of 95718 =
  39. 39.Digital root of 91649 =
  40. 40.Digital root of 82 × 91 =

Answer key

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

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