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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 730 · 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 14598 =
  2. 2.Digital root of 72819 =
  3. 3.Digital root of 64617 =
  4. 4.Digital root of 20 × 71 =
  5. 5.Digital root of 47602 =
  6. 6.Digital root of 22883 =
  7. 7.Digital root of 8894 =
  8. 8.Digital root of 98 × 90 =
  9. 9.Digital root of 16299 =
  10. 10.Digital root of 68373 =
  11. 11.Digital root of 22 × 99 =
  12. 12.Digital root of 33923 =
  13. 13.Digital root of 89368 =
  14. 14.Digital root of 69 × 82 =
  15. 15.Digital root of 78 × 13 =
  16. 16.Digital root of 20 × 57 =
  17. 17.Digital root of 65504 =
  18. 18.Digital root of 69 × 22 =
  19. 19.Digital root of 36675 =
  20. 20.Digital root of 94639 =
  21. 21.Digital root of 69920 =
  22. 22.Digital root of 31635 =
  23. 23.Digital root of 68914 =
  24. 24.Digital root of 62758 =
  25. 25.Digital root of 96 × 56 =
  26. 26.Digital root of 89011 =
  27. 27.Digital root of 91 × 14 =
  28. 28.Digital root of 21 × 61 =
  29. 29.Digital root of 29511 =
  30. 30.Digital root of 36 × 17 =
  31. 31.Digital root of 13613 =
  32. 32.Digital root of 25930 =
  33. 33.Digital root of 61151 =
  34. 34.Digital root of 75 × 36 =
  35. 35.Digital root of 55 × 51 =
  36. 36.Digital root of 82053 =
  37. 37.Digital root of 33320 =
  38. 38.Digital root of 58 × 77 =
  39. 39.Digital root of 30 × 47 =
  40. 40.Digital root of 1303 =

Answer key

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

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