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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 775 · 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 54935 =
  2. 2.Digital root of 60804 =
  3. 3.Digital root of 20 × 30 =
  4. 4.Digital root of 33091 =
  5. 5.Digital root of 22144 =
  6. 6.Digital root of 22 × 47 =
  7. 7.Digital root of 15 × 16 =
  8. 8.Digital root of 21031 =
  9. 9.Digital root of 92390 =
  10. 10.Digital root of 87921 =
  11. 11.Digital root of 90586 =
  12. 12.Digital root of 94 × 66 =
  13. 13.Digital root of 80406 =
  14. 14.Digital root of 23293 =
  15. 15.Digital root of 60396 =
  16. 16.Digital root of 57104 =
  17. 17.Digital root of 70 × 21 =
  18. 18.Digital root of 54095 =
  19. 19.Digital root of 92372 =
  20. 20.Digital root of 79009 =
  21. 21.Digital root of 64987 =
  22. 22.Digital root of 5984 =
  23. 23.Digital root of 4002 =
  24. 24.Digital root of 24 × 82 =
  25. 25.Digital root of 57 × 55 =
  26. 26.Digital root of 34083 =
  27. 27.Digital root of 69 × 62 =
  28. 28.Digital root of 97 × 69 =
  29. 29.Digital root of 24316 =
  30. 30.Digital root of 45 × 46 =
  31. 31.Digital root of 19436 =
  32. 32.Digital root of 49 × 68 =
  33. 33.Digital root of 15 × 62 =
  34. 34.Digital root of 90 × 57 =
  35. 35.Digital root of 43835 =
  36. 36.Digital root of 9783 =
  37. 37.Digital root of 12 × 99 =
  38. 38.Digital root of 40 × 14 =
  39. 39.Digital root of 17846 =
  40. 40.Digital root of 75 × 90 =

Answer key

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

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