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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 976 · 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 85072 =
  2. 2.Digital root of 52 × 16 =
  3. 3.Digital root of 43 × 60 =
  4. 4.Digital root of 28 × 27 =
  5. 5.Digital root of 28548 =
  6. 6.Digital root of 64 × 77 =
  7. 7.Digital root of 29665 =
  8. 8.Digital root of 12 × 34 =
  9. 9.Digital root of 34 × 40 =
  10. 10.Digital root of 39 × 83 =
  11. 11.Digital root of 61311 =
  12. 12.Digital root of 27826 =
  13. 13.Digital root of 81689 =
  14. 14.Digital root of 96 × 34 =
  15. 15.Digital root of 29800 =
  16. 16.Digital root of 49 × 13 =
  17. 17.Digital root of 41468 =
  18. 18.Digital root of 91235 =
  19. 19.Digital root of 63 × 74 =
  20. 20.Digital root of 98 × 93 =
  21. 21.Digital root of 51125 =
  22. 22.Digital root of 95 × 41 =
  23. 23.Digital root of 69271 =
  24. 24.Digital root of 62163 =
  25. 25.Digital root of 8425 =
  26. 26.Digital root of 1984 =
  27. 27.Digital root of 31740 =
  28. 28.Digital root of 8261 =
  29. 29.Digital root of 64 × 35 =
  30. 30.Digital root of 22355 =
  31. 31.Digital root of 85948 =
  32. 32.Digital root of 22156 =
  33. 33.Digital root of 43683 =
  34. 34.Digital root of 16890 =
  35. 35.Digital root of 32 × 85 =
  36. 36.Digital root of 89744 =
  37. 37.Digital root of 20 × 59 =
  38. 38.Digital root of 85 × 64 =
  39. 39.Digital root of 50967 =
  40. 40.Digital root of 21 × 82 =

Answer key

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

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