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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 865 · 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 69 × 34 =
  2. 2.Digital root of 30 × 41 =
  3. 3.Digital root of 61911 =
  4. 4.Digital root of 65808 =
  5. 5.Digital root of 35 × 97 =
  6. 6.Digital root of 19802 =
  7. 7.Digital root of 85 × 96 =
  8. 8.Digital root of 50 × 31 =
  9. 9.Digital root of 61 × 89 =
  10. 10.Digital root of 30 × 41 =
  11. 11.Digital root of 32 × 59 =
  12. 12.Digital root of 10949 =
  13. 13.Digital root of 57 × 92 =
  14. 14.Digital root of 77 × 35 =
  15. 15.Digital root of 31 × 66 =
  16. 16.Digital root of 37 × 75 =
  17. 17.Digital root of 35 × 37 =
  18. 18.Digital root of 99 × 39 =
  19. 19.Digital root of 66513 =
  20. 20.Digital root of 77016 =
  21. 21.Digital root of 66 × 12 =
  22. 22.Digital root of 20 × 73 =
  23. 23.Digital root of 37 × 13 =
  24. 24.Digital root of 71 × 85 =
  25. 25.Digital root of 21135 =
  26. 26.Digital root of 36950 =
  27. 27.Digital root of 34209 =
  28. 28.Digital root of 16294 =
  29. 29.Digital root of 18285 =
  30. 30.Digital root of 18929 =
  31. 31.Digital root of 23 × 68 =
  32. 32.Digital root of 29 × 35 =
  33. 33.Digital root of 47845 =
  34. 34.Digital root of 2660 =
  35. 35.Digital root of 64200 =
  36. 36.Digital root of 14539 =
  37. 37.Digital root of 87748 =
  38. 38.Digital root of 1156 =
  39. 39.Digital root of 75 × 99 =
  40. 40.Digital root of 60269 =

Answer key

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

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