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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 509 · 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 37368 =
  2. 2.Digital root of 75317 =
  3. 3.Digital root of 37 × 86 =
  4. 4.Digital root of 33052 =
  5. 5.Digital root of 50 × 55 =
  6. 6.Digital root of 97120 =
  7. 7.Digital root of 33245 =
  8. 8.Digital root of 87 × 34 =
  9. 9.Digital root of 47 × 50 =
  10. 10.Digital root of 10054 =
  11. 11.Digital root of 99854 =
  12. 12.Digital root of 39 × 84 =
  13. 13.Digital root of 72 × 75 =
  14. 14.Digital root of 31 × 14 =
  15. 15.Digital root of 96 × 15 =
  16. 16.Digital root of 51 × 45 =
  17. 17.Digital root of 59986 =
  18. 18.Digital root of 17 × 70 =
  19. 19.Digital root of 53539 =
  20. 20.Digital root of 87533 =
  21. 21.Digital root of 39 × 12 =
  22. 22.Digital root of 54 × 22 =
  23. 23.Digital root of 20688 =
  24. 24.Digital root of 50 × 93 =
  25. 25.Digital root of 20735 =
  26. 26.Digital root of 9267 =
  27. 27.Digital root of 44 × 96 =
  28. 28.Digital root of 75 × 34 =
  29. 29.Digital root of 28 × 85 =
  30. 30.Digital root of 60 × 79 =
  31. 31.Digital root of 67 × 14 =
  32. 32.Digital root of 39918 =
  33. 33.Digital root of 79841 =
  34. 34.Digital root of 37 × 49 =
  35. 35.Digital root of 84561 =
  36. 36.Digital root of 80 × 89 =
  37. 37.Digital root of 89679 =
  38. 38.Digital root of 69159 =
  39. 39.Digital root of 78 × 16 =
  40. 40.Digital root of 52835 =

Answer key

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

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