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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 863 · 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 44540 =
  2. 2.Digital root of 6279 =
  3. 3.Digital root of 54031 =
  4. 4.Digital root of 89426 =
  5. 5.Digital root of 21 × 24 =
  6. 6.Digital root of 34569 =
  7. 7.Digital root of 78 × 30 =
  8. 8.Digital root of 31962 =
  9. 9.Digital root of 22 × 86 =
  10. 10.Digital root of 99452 =
  11. 11.Digital root of 36 × 29 =
  12. 12.Digital root of 98 × 51 =
  13. 13.Digital root of 78177 =
  14. 14.Digital root of 31044 =
  15. 15.Digital root of 4673 =
  16. 16.Digital root of 45 × 86 =
  17. 17.Digital root of 65 × 18 =
  18. 18.Digital root of 86417 =
  19. 19.Digital root of 45968 =
  20. 20.Digital root of 99 × 45 =
  21. 21.Digital root of 85 × 55 =
  22. 22.Digital root of 29018 =
  23. 23.Digital root of 42 × 69 =
  24. 24.Digital root of 24 × 60 =
  25. 25.Digital root of 97747 =
  26. 26.Digital root of 67 × 48 =
  27. 27.Digital root of 28 × 44 =
  28. 28.Digital root of 63 × 69 =
  29. 29.Digital root of 78638 =
  30. 30.Digital root of 77 × 39 =
  31. 31.Digital root of 63 × 81 =
  32. 32.Digital root of 50970 =
  33. 33.Digital root of 33 × 52 =
  34. 34.Digital root of 28084 =
  35. 35.Digital root of 14 × 26 =
  36. 36.Digital root of 63 × 74 =
  37. 37.Digital root of 24 × 82 =
  38. 38.Digital root of 23852 =
  39. 39.Digital root of 72 × 73 =
  40. 40.Digital root of 28843 =

Answer key

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

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