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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 194 · 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 51539 =
  2. 2.Digital root of 89 × 37 =
  3. 3.Digital root of 82581 =
  4. 4.Digital root of 21 × 24 =
  5. 5.Digital root of 70 × 14 =
  6. 6.Digital root of 34572 =
  7. 7.Digital root of 24872 =
  8. 8.Digital root of 19 × 40 =
  9. 9.Digital root of 58 × 36 =
  10. 10.Digital root of 64019 =
  11. 11.Digital root of 57687 =
  12. 12.Digital root of 19654 =
  13. 13.Digital root of 59401 =
  14. 14.Digital root of 32 × 81 =
  15. 15.Digital root of 18 × 61 =
  16. 16.Digital root of 7443 =
  17. 17.Digital root of 17503 =
  18. 18.Digital root of 57 × 38 =
  19. 19.Digital root of 86 × 25 =
  20. 20.Digital root of 76 × 41 =
  21. 21.Digital root of 95896 =
  22. 22.Digital root of 84336 =
  23. 23.Digital root of 73230 =
  24. 24.Digital root of 64589 =
  25. 25.Digital root of 13636 =
  26. 26.Digital root of 53736 =
  27. 27.Digital root of 28977 =
  28. 28.Digital root of 35 × 90 =
  29. 29.Digital root of 98 × 78 =
  30. 30.Digital root of 25 × 42 =
  31. 31.Digital root of 34584 =
  32. 32.Digital root of 59 × 95 =
  33. 33.Digital root of 80 × 59 =
  34. 34.Digital root of 89195 =
  35. 35.Digital root of 25206 =
  36. 36.Digital root of 35 × 60 =
  37. 37.Digital root of 24 × 36 =
  38. 38.Digital root of 16767 =
  39. 39.Digital root of 13 × 57 =
  40. 40.Digital root of 77767 =

Answer key

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

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