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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 820 · 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 96 × 17 =
  2. 2.Digital root of 93768 =
  3. 3.Digital root of 8135 =
  4. 4.Digital root of 40845 =
  5. 5.Digital root of 45 × 43 =
  6. 6.Digital root of 76680 =
  7. 7.Digital root of 54 × 26 =
  8. 8.Digital root of 23 × 28 =
  9. 9.Digital root of 57885 =
  10. 10.Digital root of 21 × 31 =
  11. 11.Digital root of 37879 =
  12. 12.Digital root of 24945 =
  13. 13.Digital root of 25 × 19 =
  14. 14.Digital root of 25 × 43 =
  15. 15.Digital root of 14997 =
  16. 16.Digital root of 76454 =
  17. 17.Digital root of 34 × 27 =
  18. 18.Digital root of 68 × 64 =
  19. 19.Digital root of 21745 =
  20. 20.Digital root of 69 × 78 =
  21. 21.Digital root of 15180 =
  22. 22.Digital root of 73 × 66 =
  23. 23.Digital root of 77060 =
  24. 24.Digital root of 37 × 67 =
  25. 25.Digital root of 64 × 59 =
  26. 26.Digital root of 88513 =
  27. 27.Digital root of 55 × 45 =
  28. 28.Digital root of 22 × 21 =
  29. 29.Digital root of 96767 =
  30. 30.Digital root of 12089 =
  31. 31.Digital root of 79941 =
  32. 32.Digital root of 22338 =
  33. 33.Digital root of 81 × 53 =
  34. 34.Digital root of 94 × 95 =
  35. 35.Digital root of 91036 =
  36. 36.Digital root of 75 × 87 =
  37. 37.Digital root of 69818 =
  38. 38.Digital root of 57 × 15 =
  39. 39.Digital root of 37717 =
  40. 40.Digital root of 53 × 44 =

Answer key

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

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