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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 294 · 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 32 × 60 =
  2. 2.Digital root of 2015 =
  3. 3.Digital root of 41673 =
  4. 4.Digital root of 34 × 71 =
  5. 5.Digital root of 35713 =
  6. 6.Digital root of 22 × 27 =
  7. 7.Digital root of 81 × 44 =
  8. 8.Digital root of 92047 =
  9. 9.Digital root of 16 × 48 =
  10. 10.Digital root of 24905 =
  11. 11.Digital root of 39152 =
  12. 12.Digital root of 82502 =
  13. 13.Digital root of 4281 =
  14. 14.Digital root of 65 × 96 =
  15. 15.Digital root of 85 × 24 =
  16. 16.Digital root of 20 × 54 =
  17. 17.Digital root of 21 × 23 =
  18. 18.Digital root of 79 × 57 =
  19. 19.Digital root of 49628 =
  20. 20.Digital root of 69 × 23 =
  21. 21.Digital root of 36 × 25 =
  22. 22.Digital root of 46560 =
  23. 23.Digital root of 20002 =
  24. 24.Digital root of 54 × 49 =
  25. 25.Digital root of 8706 =
  26. 26.Digital root of 21668 =
  27. 27.Digital root of 58238 =
  28. 28.Digital root of 41 × 87 =
  29. 29.Digital root of 29 × 53 =
  30. 30.Digital root of 58646 =
  31. 31.Digital root of 87 × 89 =
  32. 32.Digital root of 32491 =
  33. 33.Digital root of 67 × 81 =
  34. 34.Digital root of 63608 =
  35. 35.Digital root of 37229 =
  36. 36.Digital root of 82 × 86 =
  37. 37.Digital root of 63326 =
  38. 38.Digital root of 26785 =
  39. 39.Digital root of 60 × 37 =
  40. 40.Digital root of 21 × 34 =

Answer key

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

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