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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 499 · 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 51 × 25 =
  2. 2.Digital root of 63199 =
  3. 3.Digital root of 69001 =
  4. 4.Digital root of 77 × 85 =
  5. 5.Digital root of 2898 =
  6. 6.Digital root of 54261 =
  7. 7.Digital root of 23399 =
  8. 8.Digital root of 71 × 82 =
  9. 9.Digital root of 41 × 36 =
  10. 10.Digital root of 45482 =
  11. 11.Digital root of 38208 =
  12. 12.Digital root of 35763 =
  13. 13.Digital root of 45 × 24 =
  14. 14.Digital root of 39 × 50 =
  15. 15.Digital root of 52 × 85 =
  16. 16.Digital root of 99034 =
  17. 17.Digital root of 37 × 74 =
  18. 18.Digital root of 21 × 14 =
  19. 19.Digital root of 93 × 85 =
  20. 20.Digital root of 6614 =
  21. 21.Digital root of 93 × 21 =
  22. 22.Digital root of 57 × 13 =
  23. 23.Digital root of 29242 =
  24. 24.Digital root of 95146 =
  25. 25.Digital root of 17450 =
  26. 26.Digital root of 36061 =
  27. 27.Digital root of 3083 =
  28. 28.Digital root of 56230 =
  29. 29.Digital root of 13480 =
  30. 30.Digital root of 32732 =
  31. 31.Digital root of 62 × 99 =
  32. 32.Digital root of 77 × 97 =
  33. 33.Digital root of 73306 =
  34. 34.Digital root of 50554 =
  35. 35.Digital root of 50757 =
  36. 36.Digital root of 92192 =
  37. 37.Digital root of 17146 =
  38. 38.Digital root of 51 × 63 =
  39. 39.Digital root of 19423 =
  40. 40.Digital root of 41809 =

Answer key

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

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