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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 12 · 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 39507 =
  2. 2.Digital root of 29 × 76 =
  3. 3.Digital root of 1449 =
  4. 4.Digital root of 45330 =
  5. 5.Digital root of 25772 =
  6. 6.Digital root of 34821 =
  7. 7.Digital root of 56 × 48 =
  8. 8.Digital root of 21620 =
  9. 9.Digital root of 81 × 27 =
  10. 10.Digital root of 61525 =
  11. 11.Digital root of 43 × 25 =
  12. 12.Digital root of 57 × 21 =
  13. 13.Digital root of 78 × 62 =
  14. 14.Digital root of 30836 =
  15. 15.Digital root of 45889 =
  16. 16.Digital root of 12214 =
  17. 17.Digital root of 34111 =
  18. 18.Digital root of 53 × 40 =
  19. 19.Digital root of 69 × 46 =
  20. 20.Digital root of 55 × 82 =
  21. 21.Digital root of 16 × 57 =
  22. 22.Digital root of 17 × 65 =
  23. 23.Digital root of 30 × 42 =
  24. 24.Digital root of 84 × 87 =
  25. 25.Digital root of 1614 =
  26. 26.Digital root of 28530 =
  27. 27.Digital root of 32 × 58 =
  28. 28.Digital root of 22 × 50 =
  29. 29.Digital root of 31501 =
  30. 30.Digital root of 98070 =
  31. 31.Digital root of 27476 =
  32. 32.Digital root of 47725 =
  33. 33.Digital root of 54 × 47 =
  34. 34.Digital root of 74967 =
  35. 35.Digital root of 15667 =
  36. 36.Digital root of 59846 =
  37. 37.Digital root of 76439 =
  38. 38.Digital root of 38 × 75 =
  39. 39.Digital root of 82319 =
  40. 40.Digital root of 72 × 19 =

Answer key

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

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