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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 101 · 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 × 22 =
  2. 2.Digital root of 12 × 43 =
  3. 3.Digital root of 32405 =
  4. 4.Digital root of 3860 =
  5. 5.Digital root of 57 × 40 =
  6. 6.Digital root of 11045 =
  7. 7.Digital root of 66947 =
  8. 8.Digital root of 51162 =
  9. 9.Digital root of 89357 =
  10. 10.Digital root of 43274 =
  11. 11.Digital root of 14 × 42 =
  12. 12.Digital root of 92031 =
  13. 13.Digital root of 57821 =
  14. 14.Digital root of 58309 =
  15. 15.Digital root of 27534 =
  16. 16.Digital root of 35 × 28 =
  17. 17.Digital root of 1751 =
  18. 18.Digital root of 89849 =
  19. 19.Digital root of 32 × 52 =
  20. 20.Digital root of 74752 =
  21. 21.Digital root of 23 × 89 =
  22. 22.Digital root of 89 × 73 =
  23. 23.Digital root of 47301 =
  24. 24.Digital root of 40985 =
  25. 25.Digital root of 16 × 13 =
  26. 26.Digital root of 22925 =
  27. 27.Digital root of 93505 =
  28. 28.Digital root of 88687 =
  29. 29.Digital root of 64 × 28 =
  30. 30.Digital root of 24691 =
  31. 31.Digital root of 39 × 41 =
  32. 32.Digital root of 53 × 33 =
  33. 33.Digital root of 51971 =
  34. 34.Digital root of 35 × 64 =
  35. 35.Digital root of 86 × 41 =
  36. 36.Digital root of 64613 =
  37. 37.Digital root of 43068 =
  38. 38.Digital root of 4623 =
  39. 39.Digital root of 95 × 45 =
  40. 40.Digital root of 17 × 81 =

Answer key

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

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