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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 28 · 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 72699 =
  2. 2.Digital root of 66 × 14 =
  3. 3.Digital root of 82551 =
  4. 4.Digital root of 25656 =
  5. 5.Digital root of 56302 =
  6. 6.Digital root of 3087 =
  7. 7.Digital root of 47863 =
  8. 8.Digital root of 65 × 17 =
  9. 9.Digital root of 54340 =
  10. 10.Digital root of 80 × 52 =
  11. 11.Digital root of 99884 =
  12. 12.Digital root of 3687 =
  13. 13.Digital root of 46829 =
  14. 14.Digital root of 64 × 63 =
  15. 15.Digital root of 89 × 87 =
  16. 16.Digital root of 93349 =
  17. 17.Digital root of 66 × 77 =
  18. 18.Digital root of 35749 =
  19. 19.Digital root of 14054 =
  20. 20.Digital root of 77294 =
  21. 21.Digital root of 49419 =
  22. 22.Digital root of 38239 =
  23. 23.Digital root of 36 × 26 =
  24. 24.Digital root of 39 × 79 =
  25. 25.Digital root of 99448 =
  26. 26.Digital root of 22 × 80 =
  27. 27.Digital root of 64 × 92 =
  28. 28.Digital root of 29 × 59 =
  29. 29.Digital root of 14 × 71 =
  30. 30.Digital root of 87835 =
  31. 31.Digital root of 42862 =
  32. 32.Digital root of 93821 =
  33. 33.Digital root of 57477 =
  34. 34.Digital root of 24246 =
  35. 35.Digital root of 28556 =
  36. 36.Digital root of 75638 =
  37. 37.Digital root of 33 × 91 =
  38. 38.Digital root of 41408 =
  39. 39.Digital root of 83462 =
  40. 40.Digital root of 87855 =

Answer key

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

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