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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 594 · 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 71 × 19 =
  2. 2.Digital root of 67 × 35 =
  3. 3.Digital root of 43 × 38 =
  4. 4.Digital root of 43 × 13 =
  5. 5.Digital root of 77 × 62 =
  6. 6.Digital root of 69854 =
  7. 7.Digital root of 66292 =
  8. 8.Digital root of 57895 =
  9. 9.Digital root of 12651 =
  10. 10.Digital root of 33 × 60 =
  11. 11.Digital root of 67 × 76 =
  12. 12.Digital root of 42721 =
  13. 13.Digital root of 38107 =
  14. 14.Digital root of 18221 =
  15. 15.Digital root of 47730 =
  16. 16.Digital root of 72218 =
  17. 17.Digital root of 54238 =
  18. 18.Digital root of 84095 =
  19. 19.Digital root of 94626 =
  20. 20.Digital root of 37 × 58 =
  21. 21.Digital root of 87341 =
  22. 22.Digital root of 55701 =
  23. 23.Digital root of 72758 =
  24. 24.Digital root of 65540 =
  25. 25.Digital root of 84 × 96 =
  26. 26.Digital root of 15378 =
  27. 27.Digital root of 88551 =
  28. 28.Digital root of 92 × 91 =
  29. 29.Digital root of 79 × 79 =
  30. 30.Digital root of 86 × 42 =
  31. 31.Digital root of 19573 =
  32. 32.Digital root of 42903 =
  33. 33.Digital root of 15687 =
  34. 34.Digital root of 42 × 31 =
  35. 35.Digital root of 83 × 14 =
  36. 36.Digital root of 12 × 24 =
  37. 37.Digital root of 9823 =
  38. 38.Digital root of 95423 =
  39. 39.Digital root of 8995 =
  40. 40.Digital root of 49307 =

Answer key

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

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