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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 576 · 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 95 × 62 =
  2. 2.Digital root of 81 × 93 =
  3. 3.Digital root of 51 × 99 =
  4. 4.Digital root of 50487 =
  5. 5.Digital root of 23583 =
  6. 6.Digital root of 83 × 22 =
  7. 7.Digital root of 10011 =
  8. 8.Digital root of 20313 =
  9. 9.Digital root of 68391 =
  10. 10.Digital root of 37 × 80 =
  11. 11.Digital root of 30 × 77 =
  12. 12.Digital root of 44031 =
  13. 13.Digital root of 51730 =
  14. 14.Digital root of 38823 =
  15. 15.Digital root of 95 × 68 =
  16. 16.Digital root of 37 × 47 =
  17. 17.Digital root of 77 × 66 =
  18. 18.Digital root of 43 × 47 =
  19. 19.Digital root of 86 × 47 =
  20. 20.Digital root of 34 × 29 =
  21. 21.Digital root of 7171 =
  22. 22.Digital root of 2675 =
  23. 23.Digital root of 30 × 69 =
  24. 24.Digital root of 77350 =
  25. 25.Digital root of 80324 =
  26. 26.Digital root of 55146 =
  27. 27.Digital root of 36 × 84 =
  28. 28.Digital root of 40349 =
  29. 29.Digital root of 53 × 86 =
  30. 30.Digital root of 69 × 21 =
  31. 31.Digital root of 19933 =
  32. 32.Digital root of 14078 =
  33. 33.Digital root of 71 × 45 =
  34. 34.Digital root of 51105 =
  35. 35.Digital root of 25 × 74 =
  36. 36.Digital root of 16269 =
  37. 37.Digital root of 12 × 74 =
  38. 38.Digital root of 43553 =
  39. 39.Digital root of 13 × 50 =
  40. 40.Digital root of 14 × 26 =

Answer key

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

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