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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 22 · 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 27503 =
  2. 2.Digital root of 92 × 18 =
  3. 3.Digital root of 15173 =
  4. 4.Digital root of 17774 =
  5. 5.Digital root of 91 × 39 =
  6. 6.Digital root of 78 × 83 =
  7. 7.Digital root of 14191 =
  8. 8.Digital root of 96 × 90 =
  9. 9.Digital root of 90 × 61 =
  10. 10.Digital root of 22 × 22 =
  11. 11.Digital root of 3348 =
  12. 12.Digital root of 40292 =
  13. 13.Digital root of 92923 =
  14. 14.Digital root of 67179 =
  15. 15.Digital root of 25084 =
  16. 16.Digital root of 75623 =
  17. 17.Digital root of 79190 =
  18. 18.Digital root of 20463 =
  19. 19.Digital root of 79 × 38 =
  20. 20.Digital root of 24179 =
  21. 21.Digital root of 75 × 77 =
  22. 22.Digital root of 69183 =
  23. 23.Digital root of 52 × 70 =
  24. 24.Digital root of 68 × 92 =
  25. 25.Digital root of 41786 =
  26. 26.Digital root of 30707 =
  27. 27.Digital root of 50 × 96 =
  28. 28.Digital root of 86276 =
  29. 29.Digital root of 48508 =
  30. 30.Digital root of 94077 =
  31. 31.Digital root of 48086 =
  32. 32.Digital root of 64117 =
  33. 33.Digital root of 28 × 50 =
  34. 34.Digital root of 97 × 59 =
  35. 35.Digital root of 67 × 87 =
  36. 36.Digital root of 55004 =
  37. 37.Digital root of 81743 =
  38. 38.Digital root of 13305 =
  39. 39.Digital root of 50 × 63 =
  40. 40.Digital root of 35345 =

Answer key

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

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