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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 766 · 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 29 × 83 =
  2. 2.Digital root of 95559 =
  3. 3.Digital root of 42577 =
  4. 4.Digital root of 58286 =
  5. 5.Digital root of 79 × 48 =
  6. 6.Digital root of 37 × 41 =
  7. 7.Digital root of 82338 =
  8. 8.Digital root of 74 × 44 =
  9. 9.Digital root of 44663 =
  10. 10.Digital root of 87 × 39 =
  11. 11.Digital root of 28 × 19 =
  12. 12.Digital root of 18 × 76 =
  13. 13.Digital root of 21992 =
  14. 14.Digital root of 97 × 93 =
  15. 15.Digital root of 41 × 94 =
  16. 16.Digital root of 33 × 93 =
  17. 17.Digital root of 73538 =
  18. 18.Digital root of 66 × 70 =
  19. 19.Digital root of 2950 =
  20. 20.Digital root of 13411 =
  21. 21.Digital root of 81 × 28 =
  22. 22.Digital root of 33 × 64 =
  23. 23.Digital root of 45430 =
  24. 24.Digital root of 16 × 57 =
  25. 25.Digital root of 38 × 64 =
  26. 26.Digital root of 55040 =
  27. 27.Digital root of 16011 =
  28. 28.Digital root of 42659 =
  29. 29.Digital root of 28 × 26 =
  30. 30.Digital root of 23 × 97 =
  31. 31.Digital root of 80018 =
  32. 32.Digital root of 2093 =
  33. 33.Digital root of 53 × 15 =
  34. 34.Digital root of 37724 =
  35. 35.Digital root of 98 × 21 =
  36. 36.Digital root of 7786 =
  37. 37.Digital root of 26011 =
  38. 38.Digital root of 88 × 31 =
  39. 39.Digital root of 47145 =
  40. 40.Digital root of 30290 =

Answer key

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

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