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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 637 · 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 38318 =
  2. 2.Digital root of 90 × 59 =
  3. 3.Digital root of 25333 =
  4. 4.Digital root of 87 × 65 =
  5. 5.Digital root of 22 × 21 =
  6. 6.Digital root of 52181 =
  7. 7.Digital root of 3049 =
  8. 8.Digital root of 45 × 37 =
  9. 9.Digital root of 76 × 64 =
  10. 10.Digital root of 90142 =
  11. 11.Digital root of 30 × 43 =
  12. 12.Digital root of 88 × 58 =
  13. 13.Digital root of 54522 =
  14. 14.Digital root of 78 × 67 =
  15. 15.Digital root of 33251 =
  16. 16.Digital root of 64 × 14 =
  17. 17.Digital root of 32 × 83 =
  18. 18.Digital root of 67 × 57 =
  19. 19.Digital root of 17 × 47 =
  20. 20.Digital root of 38 × 96 =
  21. 21.Digital root of 65702 =
  22. 22.Digital root of 14397 =
  23. 23.Digital root of 27148 =
  24. 24.Digital root of 58818 =
  25. 25.Digital root of 76670 =
  26. 26.Digital root of 81100 =
  27. 27.Digital root of 86048 =
  28. 28.Digital root of 64313 =
  29. 29.Digital root of 252 =
  30. 30.Digital root of 3414 =
  31. 31.Digital root of 84 × 30 =
  32. 32.Digital root of 83987 =
  33. 33.Digital root of 62048 =
  34. 34.Digital root of 22 × 67 =
  35. 35.Digital root of 98384 =
  36. 36.Digital root of 95183 =
  37. 37.Digital root of 86837 =
  38. 38.Digital root of 15096 =
  39. 39.Digital root of 23 × 62 =
  40. 40.Digital root of 49 × 31 =

Answer key

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

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