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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 113 · 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 84 × 16 =
  2. 2.Digital root of 31 × 54 =
  3. 3.Digital root of 10251 =
  4. 4.Digital root of 53761 =
  5. 5.Digital root of 28031 =
  6. 6.Digital root of 52556 =
  7. 7.Digital root of 71 × 20 =
  8. 8.Digital root of 38894 =
  9. 9.Digital root of 11238 =
  10. 10.Digital root of 13 × 67 =
  11. 11.Digital root of 12 × 50 =
  12. 12.Digital root of 30 × 67 =
  13. 13.Digital root of 91 × 23 =
  14. 14.Digital root of 83252 =
  15. 15.Digital root of 99439 =
  16. 16.Digital root of 24 × 95 =
  17. 17.Digital root of 83 × 67 =
  18. 18.Digital root of 3878 =
  19. 19.Digital root of 50414 =
  20. 20.Digital root of 67 × 98 =
  21. 21.Digital root of 15825 =
  22. 22.Digital root of 68039 =
  23. 23.Digital root of 21 × 68 =
  24. 24.Digital root of 89656 =
  25. 25.Digital root of 13 × 33 =
  26. 26.Digital root of 57 × 95 =
  27. 27.Digital root of 6762 =
  28. 28.Digital root of 4520 =
  29. 29.Digital root of 96658 =
  30. 30.Digital root of 27 × 41 =
  31. 31.Digital root of 77 × 87 =
  32. 32.Digital root of 52 × 68 =
  33. 33.Digital root of 55782 =
  34. 34.Digital root of 94916 =
  35. 35.Digital root of 86475 =
  36. 36.Digital root of 29137 =
  37. 37.Digital root of 67 × 27 =
  38. 38.Digital root of 51 × 13 =
  39. 39.Digital root of 57 × 96 =
  40. 40.Digital root of 31 × 86 =

Answer key

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

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