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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 668 · 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 76833 =
  2. 2.Digital root of 69478 =
  3. 3.Digital root of 29 × 41 =
  4. 4.Digital root of 90 × 82 =
  5. 5.Digital root of 34713 =
  6. 6.Digital root of 36 × 35 =
  7. 7.Digital root of 53592 =
  8. 8.Digital root of 59109 =
  9. 9.Digital root of 66 × 28 =
  10. 10.Digital root of 60791 =
  11. 11.Digital root of 32 × 54 =
  12. 12.Digital root of 28 × 96 =
  13. 13.Digital root of 39 × 83 =
  14. 14.Digital root of 43115 =
  15. 15.Digital root of 88597 =
  16. 16.Digital root of 6969 =
  17. 17.Digital root of 70216 =
  18. 18.Digital root of 43 × 44 =
  19. 19.Digital root of 79918 =
  20. 20.Digital root of 82665 =
  21. 21.Digital root of 29 × 64 =
  22. 22.Digital root of 63180 =
  23. 23.Digital root of 46921 =
  24. 24.Digital root of 25 × 70 =
  25. 25.Digital root of 43 × 87 =
  26. 26.Digital root of 38037 =
  27. 27.Digital root of 59748 =
  28. 28.Digital root of 19 × 22 =
  29. 29.Digital root of 79102 =
  30. 30.Digital root of 84367 =
  31. 31.Digital root of 18 × 55 =
  32. 32.Digital root of 27732 =
  33. 33.Digital root of 69 × 25 =
  34. 34.Digital root of 29251 =
  35. 35.Digital root of 18 × 87 =
  36. 36.Digital root of 81 × 19 =
  37. 37.Digital root of 68 × 21 =
  38. 38.Digital root of 93 × 92 =
  39. 39.Digital root of 17243 =
  40. 40.Digital root of 17276 =

Answer key

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

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