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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 900 · 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 25 × 15 =
  2. 2.Digital root of 46 × 97 =
  3. 3.Digital root of 46695 =
  4. 4.Digital root of 51 × 89 =
  5. 5.Digital root of 32429 =
  6. 6.Digital root of 94 × 31 =
  7. 7.Digital root of 89 × 18 =
  8. 8.Digital root of 24 × 21 =
  9. 9.Digital root of 78985 =
  10. 10.Digital root of 26063 =
  11. 11.Digital root of 49362 =
  12. 12.Digital root of 15469 =
  13. 13.Digital root of 21 × 38 =
  14. 14.Digital root of 9543 =
  15. 15.Digital root of 18 × 14 =
  16. 16.Digital root of 24 × 35 =
  17. 17.Digital root of 63894 =
  18. 18.Digital root of 69 × 46 =
  19. 19.Digital root of 66841 =
  20. 20.Digital root of 28674 =
  21. 21.Digital root of 19 × 57 =
  22. 22.Digital root of 94526 =
  23. 23.Digital root of 79 × 63 =
  24. 24.Digital root of 35 × 74 =
  25. 25.Digital root of 27680 =
  26. 26.Digital root of 57 × 89 =
  27. 27.Digital root of 23 × 26 =
  28. 28.Digital root of 5127 =
  29. 29.Digital root of 10757 =
  30. 30.Digital root of 10604 =
  31. 31.Digital root of 28992 =
  32. 32.Digital root of 57930 =
  33. 33.Digital root of 87557 =
  34. 34.Digital root of 89 × 32 =
  35. 35.Digital root of 39 × 90 =
  36. 36.Digital root of 92706 =
  37. 37.Digital root of 31779 =
  38. 38.Digital root of 29281 =
  39. 39.Digital root of 5960 =
  40. 40.Digital root of 38 × 91 =

Answer key

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

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