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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 14 · 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 85027 =
  2. 2.Digital root of 84 × 76 =
  3. 3.Digital root of 64097 =
  4. 4.Digital root of 55966 =
  5. 5.Digital root of 25073 =
  6. 6.Digital root of 17 × 31 =
  7. 7.Digital root of 48024 =
  8. 8.Digital root of 85796 =
  9. 9.Digital root of 74 × 31 =
  10. 10.Digital root of 22805 =
  11. 11.Digital root of 41982 =
  12. 12.Digital root of 27 × 93 =
  13. 13.Digital root of 87 × 47 =
  14. 14.Digital root of 65684 =
  15. 15.Digital root of 63 × 44 =
  16. 16.Digital root of 56366 =
  17. 17.Digital root of 20878 =
  18. 18.Digital root of 83513 =
  19. 19.Digital root of 30610 =
  20. 20.Digital root of 75 × 72 =
  21. 21.Digital root of 70059 =
  22. 22.Digital root of 12 × 19 =
  23. 23.Digital root of 16 × 40 =
  24. 24.Digital root of 19292 =
  25. 25.Digital root of 36235 =
  26. 26.Digital root of 15 × 31 =
  27. 27.Digital root of 21 × 21 =
  28. 28.Digital root of 87191 =
  29. 29.Digital root of 76938 =
  30. 30.Digital root of 31 × 47 =
  31. 31.Digital root of 629 =
  32. 32.Digital root of 83 × 31 =
  33. 33.Digital root of 99 × 76 =
  34. 34.Digital root of 12 × 48 =
  35. 35.Digital root of 54 × 87 =
  36. 36.Digital root of 41081 =
  37. 37.Digital root of 38647 =
  38. 38.Digital root of 14926 =
  39. 39.Digital root of 21603 =
  40. 40.Digital root of 28938 =

Answer key

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

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