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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 49 · 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 75 × 32 =
  2. 2.Digital root of 30248 =
  3. 3.Digital root of 25 × 28 =
  4. 4.Digital root of 58 × 31 =
  5. 5.Digital root of 94383 =
  6. 6.Digital root of 59078 =
  7. 7.Digital root of 46 × 81 =
  8. 8.Digital root of 98754 =
  9. 9.Digital root of 61440 =
  10. 10.Digital root of 51 × 53 =
  11. 11.Digital root of 28 × 44 =
  12. 12.Digital root of 68 × 40 =
  13. 13.Digital root of 95 × 60 =
  14. 14.Digital root of 51 × 72 =
  15. 15.Digital root of 87454 =
  16. 16.Digital root of 73 × 39 =
  17. 17.Digital root of 29 × 89 =
  18. 18.Digital root of 67732 =
  19. 19.Digital root of 83 × 31 =
  20. 20.Digital root of 87 × 74 =
  21. 21.Digital root of 38007 =
  22. 22.Digital root of 39843 =
  23. 23.Digital root of 7129 =
  24. 24.Digital root of 25632 =
  25. 25.Digital root of 66 × 40 =
  26. 26.Digital root of 73924 =
  27. 27.Digital root of 98740 =
  28. 28.Digital root of 58 × 37 =
  29. 29.Digital root of 39 × 26 =
  30. 30.Digital root of 86 × 39 =
  31. 31.Digital root of 38530 =
  32. 32.Digital root of 24 × 53 =
  33. 33.Digital root of 30 × 69 =
  34. 34.Digital root of 84 × 83 =
  35. 35.Digital root of 59011 =
  36. 36.Digital root of 86277 =
  37. 37.Digital root of 61 × 95 =
  38. 38.Digital root of 86462 =
  39. 39.Digital root of 85902 =
  40. 40.Digital root of 65768 =

Answer key

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

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