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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 635 · 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 16891 =
  2. 2.Digital root of 37647 =
  3. 3.Digital root of 83966 =
  4. 4.Digital root of 36103 =
  5. 5.Digital root of 19343 =
  6. 6.Digital root of 40 × 35 =
  7. 7.Digital root of 47470 =
  8. 8.Digital root of 71218 =
  9. 9.Digital root of 9463 =
  10. 10.Digital root of 60 × 31 =
  11. 11.Digital root of 77 × 12 =
  12. 12.Digital root of 58 × 54 =
  13. 13.Digital root of 26349 =
  14. 14.Digital root of 36 × 74 =
  15. 15.Digital root of 87 × 48 =
  16. 16.Digital root of 11100 =
  17. 17.Digital root of 71459 =
  18. 18.Digital root of 53 × 98 =
  19. 19.Digital root of 49 × 58 =
  20. 20.Digital root of 34756 =
  21. 21.Digital root of 15795 =
  22. 22.Digital root of 30 × 42 =
  23. 23.Digital root of 53189 =
  24. 24.Digital root of 16 × 76 =
  25. 25.Digital root of 56041 =
  26. 26.Digital root of 77 × 93 =
  27. 27.Digital root of 26344 =
  28. 28.Digital root of 56 × 43 =
  29. 29.Digital root of 38441 =
  30. 30.Digital root of 93 × 50 =
  31. 31.Digital root of 21 × 24 =
  32. 32.Digital root of 23 × 32 =
  33. 33.Digital root of 44092 =
  34. 34.Digital root of 86324 =
  35. 35.Digital root of 69 × 27 =
  36. 36.Digital root of 36663 =
  37. 37.Digital root of 60 × 43 =
  38. 38.Digital root of 49646 =
  39. 39.Digital root of 41 × 84 =
  40. 40.Digital root of 43 × 30 =

Answer key

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

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