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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 330 · 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 47320 =
  2. 2.Digital root of 64 × 61 =
  3. 3.Digital root of 99 × 34 =
  4. 4.Digital root of 48084 =
  5. 5.Digital root of 41 × 94 =
  6. 6.Digital root of 94871 =
  7. 7.Digital root of 33 × 39 =
  8. 8.Digital root of 68419 =
  9. 9.Digital root of 49158 =
  10. 10.Digital root of 49 × 16 =
  11. 11.Digital root of 43878 =
  12. 12.Digital root of 36864 =
  13. 13.Digital root of 82 × 19 =
  14. 14.Digital root of 90 × 95 =
  15. 15.Digital root of 26197 =
  16. 16.Digital root of 93072 =
  17. 17.Digital root of 38 × 45 =
  18. 18.Digital root of 98438 =
  19. 19.Digital root of 14596 =
  20. 20.Digital root of 95 × 16 =
  21. 21.Digital root of 69 × 33 =
  22. 22.Digital root of 49 × 82 =
  23. 23.Digital root of 64 × 84 =
  24. 24.Digital root of 16 × 78 =
  25. 25.Digital root of 31 × 97 =
  26. 26.Digital root of 43 × 94 =
  27. 27.Digital root of 14 × 43 =
  28. 28.Digital root of 78372 =
  29. 29.Digital root of 12 × 95 =
  30. 30.Digital root of 39 × 41 =
  31. 31.Digital root of 31793 =
  32. 32.Digital root of 88 × 25 =
  33. 33.Digital root of 1880 =
  34. 34.Digital root of 96 × 55 =
  35. 35.Digital root of 20 × 25 =
  36. 36.Digital root of 17 × 85 =
  37. 37.Digital root of 52 × 28 =
  38. 38.Digital root of 18 × 75 =
  39. 39.Digital root of 54504 =
  40. 40.Digital root of 94540 =

Answer key

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

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