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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 622 · 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 32 × 33 =
  2. 2.Digital root of 30336 =
  3. 3.Digital root of 80951 =
  4. 4.Digital root of 8271 =
  5. 5.Digital root of 9220 =
  6. 6.Digital root of 92913 =
  7. 7.Digital root of 29295 =
  8. 8.Digital root of 67042 =
  9. 9.Digital root of 84356 =
  10. 10.Digital root of 88826 =
  11. 11.Digital root of 50656 =
  12. 12.Digital root of 5115 =
  13. 13.Digital root of 20313 =
  14. 14.Digital root of 46 × 76 =
  15. 15.Digital root of 43 × 25 =
  16. 16.Digital root of 84040 =
  17. 17.Digital root of 47 × 45 =
  18. 18.Digital root of 40 × 13 =
  19. 19.Digital root of 39376 =
  20. 20.Digital root of 43150 =
  21. 21.Digital root of 12 × 15 =
  22. 22.Digital root of 24948 =
  23. 23.Digital root of 17 × 31 =
  24. 24.Digital root of 15 × 49 =
  25. 25.Digital root of 32250 =
  26. 26.Digital root of 54076 =
  27. 27.Digital root of 34 × 49 =
  28. 28.Digital root of 57769 =
  29. 29.Digital root of 96039 =
  30. 30.Digital root of 82019 =
  31. 31.Digital root of 91 × 60 =
  32. 32.Digital root of 57 × 28 =
  33. 33.Digital root of 50018 =
  34. 34.Digital root of 82557 =
  35. 35.Digital root of 42988 =
  36. 36.Digital root of 24 × 32 =
  37. 37.Digital root of 79148 =
  38. 38.Digital root of 2808 =
  39. 39.Digital root of 64111 =
  40. 40.Digital root of 81 × 27 =

Answer key

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

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