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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 84 · 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 15828 =
  2. 2.Digital root of 4369 =
  3. 3.Digital root of 13 × 18 =
  4. 4.Digital root of 17 × 28 =
  5. 5.Digital root of 37 × 50 =
  6. 6.Digital root of 74 × 31 =
  7. 7.Digital root of 53 × 60 =
  8. 8.Digital root of 90 × 90 =
  9. 9.Digital root of 45 × 59 =
  10. 10.Digital root of 75873 =
  11. 11.Digital root of 49 × 72 =
  12. 12.Digital root of 54602 =
  13. 13.Digital root of 49450 =
  14. 14.Digital root of 21173 =
  15. 15.Digital root of 10707 =
  16. 16.Digital root of 83182 =
  17. 17.Digital root of 33 × 30 =
  18. 18.Digital root of 92 × 67 =
  19. 19.Digital root of 96 × 88 =
  20. 20.Digital root of 47 × 61 =
  21. 21.Digital root of 96 × 64 =
  22. 22.Digital root of 85666 =
  23. 23.Digital root of 3353 =
  24. 24.Digital root of 86269 =
  25. 25.Digital root of 27226 =
  26. 26.Digital root of 50723 =
  27. 27.Digital root of 80 × 85 =
  28. 28.Digital root of 34 × 59 =
  29. 29.Digital root of 75 × 29 =
  30. 30.Digital root of 86 × 96 =
  31. 31.Digital root of 76 × 98 =
  32. 32.Digital root of 99403 =
  33. 33.Digital root of 20 × 29 =
  34. 34.Digital root of 78 × 78 =
  35. 35.Digital root of 32763 =
  36. 36.Digital root of 72826 =
  37. 37.Digital root of 66 × 58 =
  38. 38.Digital root of 97 × 20 =
  39. 39.Digital root of 74860 =
  40. 40.Digital root of 41087 =

Answer key

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

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