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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 493 · 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 78509 =
  2. 2.Digital root of 20702 =
  3. 3.Digital root of 43266 =
  4. 4.Digital root of 39 × 96 =
  5. 5.Digital root of 44555 =
  6. 6.Digital root of 44409 =
  7. 7.Digital root of 34841 =
  8. 8.Digital root of 99 × 42 =
  9. 9.Digital root of 30 × 73 =
  10. 10.Digital root of 74 × 28 =
  11. 11.Digital root of 21642 =
  12. 12.Digital root of 17967 =
  13. 13.Digital root of 54339 =
  14. 14.Digital root of 4621 =
  15. 15.Digital root of 66 × 52 =
  16. 16.Digital root of 7643 =
  17. 17.Digital root of 39 × 72 =
  18. 18.Digital root of 6549 =
  19. 19.Digital root of 48357 =
  20. 20.Digital root of 36 × 41 =
  21. 21.Digital root of 22 × 76 =
  22. 22.Digital root of 47129 =
  23. 23.Digital root of 93529 =
  24. 24.Digital root of 63673 =
  25. 25.Digital root of 26 × 31 =
  26. 26.Digital root of 39654 =
  27. 27.Digital root of 90020 =
  28. 28.Digital root of 28 × 25 =
  29. 29.Digital root of 31032 =
  30. 30.Digital root of 42 × 45 =
  31. 31.Digital root of 26457 =
  32. 32.Digital root of 28 × 22 =
  33. 33.Digital root of 86056 =
  34. 34.Digital root of 15 × 49 =
  35. 35.Digital root of 89 × 34 =
  36. 36.Digital root of 12587 =
  37. 37.Digital root of 18 × 27 =
  38. 38.Digital root of 72824 =
  39. 39.Digital root of 7838 =
  40. 40.Digital root of 30 × 44 =

Answer key

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

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