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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 455 · 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 6987 =
  2. 2.Digital root of 78352 =
  3. 3.Digital root of 33009 =
  4. 4.Digital root of 83 × 15 =
  5. 5.Digital root of 86635 =
  6. 6.Digital root of 27 × 43 =
  7. 7.Digital root of 31550 =
  8. 8.Digital root of 29822 =
  9. 9.Digital root of 89 × 37 =
  10. 10.Digital root of 53960 =
  11. 11.Digital root of 73906 =
  12. 12.Digital root of 50499 =
  13. 13.Digital root of 90 × 55 =
  14. 14.Digital root of 28721 =
  15. 15.Digital root of 35 × 88 =
  16. 16.Digital root of 41799 =
  17. 17.Digital root of 56539 =
  18. 18.Digital root of 38 × 91 =
  19. 19.Digital root of 61350 =
  20. 20.Digital root of 13 × 19 =
  21. 21.Digital root of 66 × 62 =
  22. 22.Digital root of 72 × 78 =
  23. 23.Digital root of 56 × 17 =
  24. 24.Digital root of 99834 =
  25. 25.Digital root of 13632 =
  26. 26.Digital root of 77 × 29 =
  27. 27.Digital root of 80153 =
  28. 28.Digital root of 34 × 32 =
  29. 29.Digital root of 47 × 61 =
  30. 30.Digital root of 10773 =
  31. 31.Digital root of 2507 =
  32. 32.Digital root of 81 × 59 =
  33. 33.Digital root of 66 × 72 =
  34. 34.Digital root of 25748 =
  35. 35.Digital root of 34711 =
  36. 36.Digital root of 69 × 89 =
  37. 37.Digital root of 12 × 79 =
  38. 38.Digital root of 64 × 72 =
  39. 39.Digital root of 38 × 15 =
  40. 40.Digital root of 87853 =

Answer key

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

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