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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 728 · 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 9366 =
  2. 2.Digital root of 25207 =
  3. 3.Digital root of 49304 =
  4. 4.Digital root of 86346 =
  5. 5.Digital root of 32 × 88 =
  6. 6.Digital root of 28109 =
  7. 7.Digital root of 15 × 40 =
  8. 8.Digital root of 17446 =
  9. 9.Digital root of 89 × 60 =
  10. 10.Digital root of 19418 =
  11. 11.Digital root of 12 × 37 =
  12. 12.Digital root of 42 × 67 =
  13. 13.Digital root of 45 × 49 =
  14. 14.Digital root of 69288 =
  15. 15.Digital root of 40 × 79 =
  16. 16.Digital root of 43 × 85 =
  17. 17.Digital root of 14 × 25 =
  18. 18.Digital root of 41285 =
  19. 19.Digital root of 55980 =
  20. 20.Digital root of 80 × 64 =
  21. 21.Digital root of 18592 =
  22. 22.Digital root of 35956 =
  23. 23.Digital root of 90490 =
  24. 24.Digital root of 50006 =
  25. 25.Digital root of 46 × 21 =
  26. 26.Digital root of 19407 =
  27. 27.Digital root of 94446 =
  28. 28.Digital root of 26659 =
  29. 29.Digital root of 74 × 44 =
  30. 30.Digital root of 29068 =
  31. 31.Digital root of 40322 =
  32. 32.Digital root of 12 × 35 =
  33. 33.Digital root of 18369 =
  34. 34.Digital root of 35 × 36 =
  35. 35.Digital root of 72764 =
  36. 36.Digital root of 51224 =
  37. 37.Digital root of 10362 =
  38. 38.Digital root of 57352 =
  39. 39.Digital root of 70826 =
  40. 40.Digital root of 38 × 32 =

Answer key

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

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