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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 440 · 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 15 × 25 =
  2. 2.Digital root of 2390 =
  3. 3.Digital root of 21 × 36 =
  4. 4.Digital root of 2164 =
  5. 5.Digital root of 76700 =
  6. 6.Digital root of 33498 =
  7. 7.Digital root of 73 × 28 =
  8. 8.Digital root of 39 × 25 =
  9. 9.Digital root of 76 × 81 =
  10. 10.Digital root of 36661 =
  11. 11.Digital root of 4137 =
  12. 12.Digital root of 55020 =
  13. 13.Digital root of 88070 =
  14. 14.Digital root of 18 × 61 =
  15. 15.Digital root of 65 × 78 =
  16. 16.Digital root of 38927 =
  17. 17.Digital root of 91004 =
  18. 18.Digital root of 92 × 48 =
  19. 19.Digital root of 64 × 95 =
  20. 20.Digital root of 24500 =
  21. 21.Digital root of 74526 =
  22. 22.Digital root of 87 × 43 =
  23. 23.Digital root of 97 × 20 =
  24. 24.Digital root of 36801 =
  25. 25.Digital root of 43081 =
  26. 26.Digital root of 37581 =
  27. 27.Digital root of 83 × 82 =
  28. 28.Digital root of 4139 =
  29. 29.Digital root of 41 × 82 =
  30. 30.Digital root of 22094 =
  31. 31.Digital root of 7685 =
  32. 32.Digital root of 74 × 30 =
  33. 33.Digital root of 74 × 97 =
  34. 34.Digital root of 16722 =
  35. 35.Digital root of 83030 =
  36. 36.Digital root of 61 × 58 =
  37. 37.Digital root of 52238 =
  38. 38.Digital root of 34 × 25 =
  39. 39.Digital root of 7711 =
  40. 40.Digital root of 1666 =

Answer key

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

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