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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 557 · 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 35 × 36 =
  2. 2.Digital root of 21551 =
  3. 3.Digital root of 98134 =
  4. 4.Digital root of 89 × 63 =
  5. 5.Digital root of 47973 =
  6. 6.Digital root of 14744 =
  7. 7.Digital root of 12 × 76 =
  8. 8.Digital root of 37 × 49 =
  9. 9.Digital root of 97174 =
  10. 10.Digital root of 2003 =
  11. 11.Digital root of 82 × 37 =
  12. 12.Digital root of 76 × 58 =
  13. 13.Digital root of 29952 =
  14. 14.Digital root of 76 × 21 =
  15. 15.Digital root of 33506 =
  16. 16.Digital root of 9225 =
  17. 17.Digital root of 97 × 16 =
  18. 18.Digital root of 61408 =
  19. 19.Digital root of 20 × 89 =
  20. 20.Digital root of 37 × 17 =
  21. 21.Digital root of 14 × 95 =
  22. 22.Digital root of 67 × 89 =
  23. 23.Digital root of 70 × 29 =
  24. 24.Digital root of 37368 =
  25. 25.Digital root of 78012 =
  26. 26.Digital root of 35095 =
  27. 27.Digital root of 63438 =
  28. 28.Digital root of 47 × 48 =
  29. 29.Digital root of 16996 =
  30. 30.Digital root of 72564 =
  31. 31.Digital root of 10629 =
  32. 32.Digital root of 85181 =
  33. 33.Digital root of 19 × 30 =
  34. 34.Digital root of 26783 =
  35. 35.Digital root of 96 × 31 =
  36. 36.Digital root of 46 × 22 =
  37. 37.Digital root of 74832 =
  38. 38.Digital root of 98 × 30 =
  39. 39.Digital root of 27482 =
  40. 40.Digital root of 46 × 92 =

Answer key

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

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