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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 60 · 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 1307 =
  2. 2.Digital root of 22786 =
  3. 3.Digital root of 98868 =
  4. 4.Digital root of 71346 =
  5. 5.Digital root of 25 × 80 =
  6. 6.Digital root of 42 × 32 =
  7. 7.Digital root of 78 × 43 =
  8. 8.Digital root of 42 × 98 =
  9. 9.Digital root of 98686 =
  10. 10.Digital root of 55 × 82 =
  11. 11.Digital root of 35643 =
  12. 12.Digital root of 79400 =
  13. 13.Digital root of 85158 =
  14. 14.Digital root of 49 × 68 =
  15. 15.Digital root of 39 × 30 =
  16. 16.Digital root of 40 × 23 =
  17. 17.Digital root of 63330 =
  18. 18.Digital root of 65300 =
  19. 19.Digital root of 14909 =
  20. 20.Digital root of 12963 =
  21. 21.Digital root of 52 × 75 =
  22. 22.Digital root of 29486 =
  23. 23.Digital root of 64031 =
  24. 24.Digital root of 96 × 83 =
  25. 25.Digital root of 62 × 96 =
  26. 26.Digital root of 92202 =
  27. 27.Digital root of 95871 =
  28. 28.Digital root of 6899 =
  29. 29.Digital root of 82 × 64 =
  30. 30.Digital root of 31 × 12 =
  31. 31.Digital root of 50 × 17 =
  32. 32.Digital root of 94273 =
  33. 33.Digital root of 15797 =
  34. 34.Digital root of 73303 =
  35. 35.Digital root of 42 × 21 =
  36. 36.Digital root of 91 × 21 =
  37. 37.Digital root of 67190 =
  38. 38.Digital root of 78395 =
  39. 39.Digital root of 53132 =
  40. 40.Digital root of 36 × 24 =

Answer key

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

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