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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 322 · 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 51395 =
  2. 2.Digital root of 21 × 73 =
  3. 3.Digital root of 84023 =
  4. 4.Digital root of 61415 =
  5. 5.Digital root of 39 × 34 =
  6. 6.Digital root of 66 × 44 =
  7. 7.Digital root of 57 × 90 =
  8. 8.Digital root of 32 × 81 =
  9. 9.Digital root of 5514 =
  10. 10.Digital root of 27 × 81 =
  11. 11.Digital root of 35 × 36 =
  12. 12.Digital root of 14882 =
  13. 13.Digital root of 47 × 41 =
  14. 14.Digital root of 17 × 67 =
  15. 15.Digital root of 32192 =
  16. 16.Digital root of 69528 =
  17. 17.Digital root of 28338 =
  18. 18.Digital root of 26 × 24 =
  19. 19.Digital root of 15 × 35 =
  20. 20.Digital root of 22897 =
  21. 21.Digital root of 29127 =
  22. 22.Digital root of 96 × 12 =
  23. 23.Digital root of 67 × 28 =
  24. 24.Digital root of 84300 =
  25. 25.Digital root of 76 × 83 =
  26. 26.Digital root of 57436 =
  27. 27.Digital root of 9155 =
  28. 28.Digital root of 51 × 62 =
  29. 29.Digital root of 48095 =
  30. 30.Digital root of 96930 =
  31. 31.Digital root of 42 × 44 =
  32. 32.Digital root of 42662 =
  33. 33.Digital root of 92 × 74 =
  34. 34.Digital root of 43517 =
  35. 35.Digital root of 32430 =
  36. 36.Digital root of 73 × 50 =
  37. 37.Digital root of 3939 =
  38. 38.Digital root of 20375 =
  39. 39.Digital root of 20 × 71 =
  40. 40.Digital root of 17791 =

Answer key

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

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