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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 415 · 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 57 × 60 =
  2. 2.Digital root of 64 × 83 =
  3. 3.Digital root of 53 × 47 =
  4. 4.Digital root of 14 × 63 =
  5. 5.Digital root of 75219 =
  6. 6.Digital root of 35556 =
  7. 7.Digital root of 92322 =
  8. 8.Digital root of 51 × 57 =
  9. 9.Digital root of 37 × 75 =
  10. 10.Digital root of 59763 =
  11. 11.Digital root of 55 × 76 =
  12. 12.Digital root of 37 × 23 =
  13. 13.Digital root of 3477 =
  14. 14.Digital root of 2629 =
  15. 15.Digital root of 84577 =
  16. 16.Digital root of 43 × 37 =
  17. 17.Digital root of 18055 =
  18. 18.Digital root of 13 × 21 =
  19. 19.Digital root of 79 × 47 =
  20. 20.Digital root of 16301 =
  21. 21.Digital root of 73 × 27 =
  22. 22.Digital root of 90283 =
  23. 23.Digital root of 27 × 46 =
  24. 24.Digital root of 8329 =
  25. 25.Digital root of 43207 =
  26. 26.Digital root of 61971 =
  27. 27.Digital root of 7648 =
  28. 28.Digital root of 57119 =
  29. 29.Digital root of 17 × 81 =
  30. 30.Digital root of 23 × 81 =
  31. 31.Digital root of 73935 =
  32. 32.Digital root of 95 × 60 =
  33. 33.Digital root of 39372 =
  34. 34.Digital root of 55289 =
  35. 35.Digital root of 9573 =
  36. 36.Digital root of 32813 =
  37. 37.Digital root of 59170 =
  38. 38.Digital root of 45802 =
  39. 39.Digital root of 55 × 45 =
  40. 40.Digital root of 47454 =

Answer key

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

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