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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 759 · 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 85 × 85 =
  2. 2.Digital root of 81840 =
  3. 3.Digital root of 76558 =
  4. 4.Digital root of 39614 =
  5. 5.Digital root of 15430 =
  6. 6.Digital root of 2336 =
  7. 7.Digital root of 7449 =
  8. 8.Digital root of 11435 =
  9. 9.Digital root of 85 × 36 =
  10. 10.Digital root of 1272 =
  11. 11.Digital root of 78 × 20 =
  12. 12.Digital root of 21168 =
  13. 13.Digital root of 96 × 53 =
  14. 14.Digital root of 45929 =
  15. 15.Digital root of 75499 =
  16. 16.Digital root of 6037 =
  17. 17.Digital root of 78 × 35 =
  18. 18.Digital root of 29 × 87 =
  19. 19.Digital root of 32115 =
  20. 20.Digital root of 93036 =
  21. 21.Digital root of 1109 =
  22. 22.Digital root of 13 × 93 =
  23. 23.Digital root of 22865 =
  24. 24.Digital root of 45 × 60 =
  25. 25.Digital root of 94 × 24 =
  26. 26.Digital root of 54405 =
  27. 27.Digital root of 56009 =
  28. 28.Digital root of 37987 =
  29. 29.Digital root of 74034 =
  30. 30.Digital root of 99 × 18 =
  31. 31.Digital root of 25393 =
  32. 32.Digital root of 10436 =
  33. 33.Digital root of 47 × 38 =
  34. 34.Digital root of 25435 =
  35. 35.Digital root of 36 × 45 =
  36. 36.Digital root of 42788 =
  37. 37.Digital root of 53 × 83 =
  38. 38.Digital root of 24 × 37 =
  39. 39.Digital root of 60014 =
  40. 40.Digital root of 23 × 58 =

Answer key

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

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