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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 815 · 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 66 × 17 =
  2. 2.Digital root of 19670 =
  3. 3.Digital root of 73974 =
  4. 4.Digital root of 62210 =
  5. 5.Digital root of 90105 =
  6. 6.Digital root of 19772 =
  7. 7.Digital root of 46 × 51 =
  8. 8.Digital root of 48 × 32 =
  9. 9.Digital root of 910 =
  10. 10.Digital root of 49 × 43 =
  11. 11.Digital root of 55 × 36 =
  12. 12.Digital root of 85 × 93 =
  13. 13.Digital root of 29349 =
  14. 14.Digital root of 23 × 31 =
  15. 15.Digital root of 50936 =
  16. 16.Digital root of 27 × 72 =
  17. 17.Digital root of 17 × 98 =
  18. 18.Digital root of 76935 =
  19. 19.Digital root of 79 × 82 =
  20. 20.Digital root of 27896 =
  21. 21.Digital root of 17815 =
  22. 22.Digital root of 69 × 64 =
  23. 23.Digital root of 30 × 45 =
  24. 24.Digital root of 201 =
  25. 25.Digital root of 48366 =
  26. 26.Digital root of 57 × 44 =
  27. 27.Digital root of 44909 =
  28. 28.Digital root of 2436 =
  29. 29.Digital root of 93097 =
  30. 30.Digital root of 76 × 48 =
  31. 31.Digital root of 93926 =
  32. 32.Digital root of 50437 =
  33. 33.Digital root of 66795 =
  34. 34.Digital root of 4931 =
  35. 35.Digital root of 78 × 29 =
  36. 36.Digital root of 76989 =
  37. 37.Digital root of 53 × 89 =
  38. 38.Digital root of 26 × 72 =
  39. 39.Digital root of 94 × 71 =
  40. 40.Digital root of 66450 =

Answer key

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

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