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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 171 · 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 11571 =
  2. 2.Digital root of 16197 =
  3. 3.Digital root of 88 × 44 =
  4. 4.Digital root of 75 × 48 =
  5. 5.Digital root of 25823 =
  6. 6.Digital root of 24105 =
  7. 7.Digital root of 28605 =
  8. 8.Digital root of 47 × 32 =
  9. 9.Digital root of 41 × 91 =
  10. 10.Digital root of 40 × 89 =
  11. 11.Digital root of 90607 =
  12. 12.Digital root of 78576 =
  13. 13.Digital root of 70 × 48 =
  14. 14.Digital root of 37 × 98 =
  15. 15.Digital root of 51 × 69 =
  16. 16.Digital root of 64 × 29 =
  17. 17.Digital root of 12432 =
  18. 18.Digital root of 64 × 50 =
  19. 19.Digital root of 56 × 13 =
  20. 20.Digital root of 5993 =
  21. 21.Digital root of 69 × 37 =
  22. 22.Digital root of 48170 =
  23. 23.Digital root of 36 × 17 =
  24. 24.Digital root of 16493 =
  25. 25.Digital root of 44157 =
  26. 26.Digital root of 96 × 84 =
  27. 27.Digital root of 97700 =
  28. 28.Digital root of 65 × 43 =
  29. 29.Digital root of 41317 =
  30. 30.Digital root of 31786 =
  31. 31.Digital root of 84 × 52 =
  32. 32.Digital root of 42805 =
  33. 33.Digital root of 94083 =
  34. 34.Digital root of 83 × 28 =
  35. 35.Digital root of 33 × 19 =
  36. 36.Digital root of 69 × 65 =
  37. 37.Digital root of 21810 =
  38. 38.Digital root of 47 × 35 =
  39. 39.Digital root of 3937 =
  40. 40.Digital root of 15 × 41 =

Answer key

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

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