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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 789 · 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 85 × 91 =
  2. 2.Digital root of 61 × 61 =
  3. 3.Digital root of 74118 =
  4. 4.Digital root of 22911 =
  5. 5.Digital root of 69 × 45 =
  6. 6.Digital root of 74 × 39 =
  7. 7.Digital root of 11631 =
  8. 8.Digital root of 59573 =
  9. 9.Digital root of 24704 =
  10. 10.Digital root of 90379 =
  11. 11.Digital root of 76292 =
  12. 12.Digital root of 12 × 36 =
  13. 13.Digital root of 32 × 15 =
  14. 14.Digital root of 33 × 86 =
  15. 15.Digital root of 28 × 12 =
  16. 16.Digital root of 73080 =
  17. 17.Digital root of 63 × 70 =
  18. 18.Digital root of 73 × 49 =
  19. 19.Digital root of 49 × 64 =
  20. 20.Digital root of 87812 =
  21. 21.Digital root of 44 × 83 =
  22. 22.Digital root of 21 × 86 =
  23. 23.Digital root of 28814 =
  24. 24.Digital root of 13269 =
  25. 25.Digital root of 67466 =
  26. 26.Digital root of 69 × 91 =
  27. 27.Digital root of 18 × 74 =
  28. 28.Digital root of 98 × 81 =
  29. 29.Digital root of 26277 =
  30. 30.Digital root of 16 × 35 =
  31. 31.Digital root of 20 × 15 =
  32. 32.Digital root of 48239 =
  33. 33.Digital root of 24975 =
  34. 34.Digital root of 69 × 17 =
  35. 35.Digital root of 48 × 77 =
  36. 36.Digital root of 13754 =
  37. 37.Digital root of 10670 =
  38. 38.Digital root of 73 × 80 =
  39. 39.Digital root of 50 × 37 =
  40. 40.Digital root of 94727 =

Answer key

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

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