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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 903 · 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 46255 =
  2. 2.Digital root of 6425 =
  3. 3.Digital root of 54042 =
  4. 4.Digital root of 53 × 96 =
  5. 5.Digital root of 36655 =
  6. 6.Digital root of 49 × 57 =
  7. 7.Digital root of 12 × 99 =
  8. 8.Digital root of 94 × 41 =
  9. 9.Digital root of 81 × 80 =
  10. 10.Digital root of 29371 =
  11. 11.Digital root of 20128 =
  12. 12.Digital root of 12989 =
  13. 13.Digital root of 28 × 70 =
  14. 14.Digital root of 9786 =
  15. 15.Digital root of 8941 =
  16. 16.Digital root of 73875 =
  17. 17.Digital root of 15 × 90 =
  18. 18.Digital root of 69631 =
  19. 19.Digital root of 26717 =
  20. 20.Digital root of 29103 =
  21. 21.Digital root of 69429 =
  22. 22.Digital root of 98020 =
  23. 23.Digital root of 17185 =
  24. 24.Digital root of 76449 =
  25. 25.Digital root of 63 × 47 =
  26. 26.Digital root of 39124 =
  27. 27.Digital root of 13 × 52 =
  28. 28.Digital root of 76 × 38 =
  29. 29.Digital root of 20707 =
  30. 30.Digital root of 34 × 32 =
  31. 31.Digital root of 97 × 43 =
  32. 32.Digital root of 41 × 76 =
  33. 33.Digital root of 3900 =
  34. 34.Digital root of 97 × 97 =
  35. 35.Digital root of 52 × 87 =
  36. 36.Digital root of 76303 =
  37. 37.Digital root of 21645 =
  38. 38.Digital root of 85 × 42 =
  39. 39.Digital root of 71962 =
  40. 40.Digital root of 18 × 85 =

Answer key

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

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