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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 93 · 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 1564 =
  2. 2.Digital root of 75 × 68 =
  3. 3.Digital root of 85 × 29 =
  4. 4.Digital root of 65 × 12 =
  5. 5.Digital root of 34571 =
  6. 6.Digital root of 57991 =
  7. 7.Digital root of 19157 =
  8. 8.Digital root of 28 × 49 =
  9. 9.Digital root of 12514 =
  10. 10.Digital root of 44 × 99 =
  11. 11.Digital root of 20828 =
  12. 12.Digital root of 9262 =
  13. 13.Digital root of 67704 =
  14. 14.Digital root of 93557 =
  15. 15.Digital root of 55828 =
  16. 16.Digital root of 25194 =
  17. 17.Digital root of 41476 =
  18. 18.Digital root of 16 × 49 =
  19. 19.Digital root of 93325 =
  20. 20.Digital root of 96 × 36 =
  21. 21.Digital root of 1924 =
  22. 22.Digital root of 78 × 15 =
  23. 23.Digital root of 84227 =
  24. 24.Digital root of 30 × 16 =
  25. 25.Digital root of 23 × 23 =
  26. 26.Digital root of 57 × 68 =
  27. 27.Digital root of 18049 =
  28. 28.Digital root of 33366 =
  29. 29.Digital root of 42059 =
  30. 30.Digital root of 25997 =
  31. 31.Digital root of 15947 =
  32. 32.Digital root of 58 × 88 =
  33. 33.Digital root of 58461 =
  34. 34.Digital root of 65 × 27 =
  35. 35.Digital root of 34 × 71 =
  36. 36.Digital root of 35 × 26 =
  37. 37.Digital root of 91 × 56 =
  38. 38.Digital root of 50 × 52 =
  39. 39.Digital root of 54543 =
  40. 40.Digital root of 83197 =

Answer key

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

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