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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 577 · 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 18916 =
  2. 2.Digital root of 87994 =
  3. 3.Digital root of 1501 =
  4. 4.Digital root of 65 × 63 =
  5. 5.Digital root of 6702 =
  6. 6.Digital root of 44 × 89 =
  7. 7.Digital root of 67 × 52 =
  8. 8.Digital root of 32 × 58 =
  9. 9.Digital root of 83 × 77 =
  10. 10.Digital root of 88972 =
  11. 11.Digital root of 3531 =
  12. 12.Digital root of 78 × 78 =
  13. 13.Digital root of 32 × 58 =
  14. 14.Digital root of 15921 =
  15. 15.Digital root of 55 × 53 =
  16. 16.Digital root of 59305 =
  17. 17.Digital root of 61 × 73 =
  18. 18.Digital root of 47143 =
  19. 19.Digital root of 61830 =
  20. 20.Digital root of 25 × 57 =
  21. 21.Digital root of 89 × 78 =
  22. 22.Digital root of 75338 =
  23. 23.Digital root of 70982 =
  24. 24.Digital root of 28010 =
  25. 25.Digital root of 82266 =
  26. 26.Digital root of 32 × 72 =
  27. 27.Digital root of 3279 =
  28. 28.Digital root of 29884 =
  29. 29.Digital root of 80173 =
  30. 30.Digital root of 18952 =
  31. 31.Digital root of 80 × 86 =
  32. 32.Digital root of 55 × 41 =
  33. 33.Digital root of 37270 =
  34. 34.Digital root of 66115 =
  35. 35.Digital root of 93 × 21 =
  36. 36.Digital root of 35 × 37 =
  37. 37.Digital root of 44 × 31 =
  38. 38.Digital root of 26954 =
  39. 39.Digital root of 31 × 33 =
  40. 40.Digital root of 87175 =

Answer key

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

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