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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 560 · 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 31 × 63 =
  2. 2.Digital root of 1543 =
  3. 3.Digital root of 46163 =
  4. 4.Digital root of 12526 =
  5. 5.Digital root of 14 × 39 =
  6. 6.Digital root of 78312 =
  7. 7.Digital root of 15881 =
  8. 8.Digital root of 51808 =
  9. 9.Digital root of 61 × 94 =
  10. 10.Digital root of 66487 =
  11. 11.Digital root of 92195 =
  12. 12.Digital root of 94 × 96 =
  13. 13.Digital root of 16 × 76 =
  14. 14.Digital root of 50293 =
  15. 15.Digital root of 61517 =
  16. 16.Digital root of 43 × 82 =
  17. 17.Digital root of 63635 =
  18. 18.Digital root of 90846 =
  19. 19.Digital root of 61261 =
  20. 20.Digital root of 18 × 40 =
  21. 21.Digital root of 24500 =
  22. 22.Digital root of 78 × 21 =
  23. 23.Digital root of 66094 =
  24. 24.Digital root of 16 × 71 =
  25. 25.Digital root of 20 × 16 =
  26. 26.Digital root of 95553 =
  27. 27.Digital root of 78 × 22 =
  28. 28.Digital root of 7552 =
  29. 29.Digital root of 90 × 40 =
  30. 30.Digital root of 74699 =
  31. 31.Digital root of 19439 =
  32. 32.Digital root of 28 × 27 =
  33. 33.Digital root of 46163 =
  34. 34.Digital root of 98756 =
  35. 35.Digital root of 41162 =
  36. 36.Digital root of 22442 =
  37. 37.Digital root of 11063 =
  38. 38.Digital root of 72 × 41 =
  39. 39.Digital root of 84269 =
  40. 40.Digital root of 32 × 84 =

Answer key

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

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