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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 483 · 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 15683 =
  2. 2.Digital root of 19643 =
  3. 3.Digital root of 38 × 73 =
  4. 4.Digital root of 30 × 62 =
  5. 5.Digital root of 13 × 12 =
  6. 6.Digital root of 27 × 16 =
  7. 7.Digital root of 22 × 84 =
  8. 8.Digital root of 78 × 77 =
  9. 9.Digital root of 5603 =
  10. 10.Digital root of 36 × 24 =
  11. 11.Digital root of 37 × 57 =
  12. 12.Digital root of 54865 =
  13. 13.Digital root of 63869 =
  14. 14.Digital root of 91514 =
  15. 15.Digital root of 48635 =
  16. 16.Digital root of 89050 =
  17. 17.Digital root of 2969 =
  18. 18.Digital root of 63596 =
  19. 19.Digital root of 70 × 32 =
  20. 20.Digital root of 28 × 24 =
  21. 21.Digital root of 6748 =
  22. 22.Digital root of 69 × 34 =
  23. 23.Digital root of 50033 =
  24. 24.Digital root of 32145 =
  25. 25.Digital root of 31922 =
  26. 26.Digital root of 5864 =
  27. 27.Digital root of 12 × 23 =
  28. 28.Digital root of 59251 =
  29. 29.Digital root of 77988 =
  30. 30.Digital root of 4927 =
  31. 31.Digital root of 18 × 18 =
  32. 32.Digital root of 32501 =
  33. 33.Digital root of 61 × 21 =
  34. 34.Digital root of 64 × 76 =
  35. 35.Digital root of 4519 =
  36. 36.Digital root of 36 × 59 =
  37. 37.Digital root of 68 × 42 =
  38. 38.Digital root of 54924 =
  39. 39.Digital root of 28 × 74 =
  40. 40.Digital root of 10090 =

Answer key

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

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