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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 774 · 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 60 × 69 =
  2. 2.Digital root of 25 × 54 =
  3. 3.Digital root of 44037 =
  4. 4.Digital root of 91 × 80 =
  5. 5.Digital root of 69 × 34 =
  6. 6.Digital root of 37 × 46 =
  7. 7.Digital root of 21573 =
  8. 8.Digital root of 18 × 17 =
  9. 9.Digital root of 61278 =
  10. 10.Digital root of 77 × 82 =
  11. 11.Digital root of 39 × 65 =
  12. 12.Digital root of 4015 =
  13. 13.Digital root of 48007 =
  14. 14.Digital root of 39089 =
  15. 15.Digital root of 51347 =
  16. 16.Digital root of 89240 =
  17. 17.Digital root of 37 × 63 =
  18. 18.Digital root of 76972 =
  19. 19.Digital root of 77 × 66 =
  20. 20.Digital root of 69023 =
  21. 21.Digital root of 13718 =
  22. 22.Digital root of 59 × 28 =
  23. 23.Digital root of 2833 =
  24. 24.Digital root of 50779 =
  25. 25.Digital root of 14117 =
  26. 26.Digital root of 25 × 77 =
  27. 27.Digital root of 59 × 17 =
  28. 28.Digital root of 81 × 25 =
  29. 29.Digital root of 46420 =
  30. 30.Digital root of 90 × 17 =
  31. 31.Digital root of 49 × 28 =
  32. 32.Digital root of 54 × 43 =
  33. 33.Digital root of 15 × 60 =
  34. 34.Digital root of 51555 =
  35. 35.Digital root of 15 × 97 =
  36. 36.Digital root of 22 × 94 =
  37. 37.Digital root of 23943 =
  38. 38.Digital root of 26 × 25 =
  39. 39.Digital root of 35 × 71 =
  40. 40.Digital root of 45751 =

Answer key

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

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