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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 25 · 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 41 × 12 =
  2. 2.Digital root of 30 × 56 =
  3. 3.Digital root of 19209 =
  4. 4.Digital root of 15308 =
  5. 5.Digital root of 51798 =
  6. 6.Digital root of 11673 =
  7. 7.Digital root of 89 × 67 =
  8. 8.Digital root of 45955 =
  9. 9.Digital root of 73711 =
  10. 10.Digital root of 80973 =
  11. 11.Digital root of 38163 =
  12. 12.Digital root of 58813 =
  13. 13.Digital root of 17189 =
  14. 14.Digital root of 18294 =
  15. 15.Digital root of 96917 =
  16. 16.Digital root of 55 × 68 =
  17. 17.Digital root of 32229 =
  18. 18.Digital root of 92 × 31 =
  19. 19.Digital root of 44 × 89 =
  20. 20.Digital root of 47622 =
  21. 21.Digital root of 75 × 65 =
  22. 22.Digital root of 30642 =
  23. 23.Digital root of 26328 =
  24. 24.Digital root of 23185 =
  25. 25.Digital root of 68909 =
  26. 26.Digital root of 21017 =
  27. 27.Digital root of 14 × 17 =
  28. 28.Digital root of 88193 =
  29. 29.Digital root of 85 × 46 =
  30. 30.Digital root of 70 × 14 =
  31. 31.Digital root of 60230 =
  32. 32.Digital root of 84 × 42 =
  33. 33.Digital root of 96155 =
  34. 34.Digital root of 23615 =
  35. 35.Digital root of 34816 =
  36. 36.Digital root of 34 × 84 =
  37. 37.Digital root of 46 × 60 =
  38. 38.Digital root of 50 × 89 =
  39. 39.Digital root of 27424 =
  40. 40.Digital root of 76 × 89 =

Answer key

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

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