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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 173 · 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 11217 =
  2. 2.Digital root of 19 × 76 =
  3. 3.Digital root of 67201 =
  4. 4.Digital root of 62 × 22 =
  5. 5.Digital root of 6529 =
  6. 6.Digital root of 21361 =
  7. 7.Digital root of 74160 =
  8. 8.Digital root of 28724 =
  9. 9.Digital root of 17809 =
  10. 10.Digital root of 92 × 63 =
  11. 11.Digital root of 46163 =
  12. 12.Digital root of 85593 =
  13. 13.Digital root of 34 × 37 =
  14. 14.Digital root of 845 =
  15. 15.Digital root of 14066 =
  16. 16.Digital root of 21 × 64 =
  17. 17.Digital root of 77 × 93 =
  18. 18.Digital root of 38235 =
  19. 19.Digital root of 21 × 21 =
  20. 20.Digital root of 60822 =
  21. 21.Digital root of 68 × 19 =
  22. 22.Digital root of 16431 =
  23. 23.Digital root of 27357 =
  24. 24.Digital root of 31955 =
  25. 25.Digital root of 53470 =
  26. 26.Digital root of 80 × 39 =
  27. 27.Digital root of 98 × 22 =
  28. 28.Digital root of 37988 =
  29. 29.Digital root of 71287 =
  30. 30.Digital root of 77954 =
  31. 31.Digital root of 22 × 36 =
  32. 32.Digital root of 80 × 71 =
  33. 33.Digital root of 28728 =
  34. 34.Digital root of 45 × 74 =
  35. 35.Digital root of 53039 =
  36. 36.Digital root of 44 × 46 =
  37. 37.Digital root of 88 × 67 =
  38. 38.Digital root of 19674 =
  39. 39.Digital root of 60 × 81 =
  40. 40.Digital root of 48755 =

Answer key

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

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