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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 350 · 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 92562 =
  2. 2.Digital root of 78425 =
  3. 3.Digital root of 30 × 62 =
  4. 4.Digital root of 69917 =
  5. 5.Digital root of 81925 =
  6. 6.Digital root of 63 × 88 =
  7. 7.Digital root of 18026 =
  8. 8.Digital root of 36838 =
  9. 9.Digital root of 65 × 76 =
  10. 10.Digital root of 13 × 16 =
  11. 11.Digital root of 32 × 95 =
  12. 12.Digital root of 83266 =
  13. 13.Digital root of 9195 =
  14. 14.Digital root of 52 × 38 =
  15. 15.Digital root of 24 × 78 =
  16. 16.Digital root of 17046 =
  17. 17.Digital root of 61 × 36 =
  18. 18.Digital root of 96 × 31 =
  19. 19.Digital root of 71043 =
  20. 20.Digital root of 66 × 66 =
  21. 21.Digital root of 17 × 70 =
  22. 22.Digital root of 68 × 90 =
  23. 23.Digital root of 53186 =
  24. 24.Digital root of 56179 =
  25. 25.Digital root of 28332 =
  26. 26.Digital root of 63604 =
  27. 27.Digital root of 83010 =
  28. 28.Digital root of 47243 =
  29. 29.Digital root of 69221 =
  30. 30.Digital root of 40 × 28 =
  31. 31.Digital root of 12 × 29 =
  32. 32.Digital root of 23 × 55 =
  33. 33.Digital root of 14465 =
  34. 34.Digital root of 21 × 68 =
  35. 35.Digital root of 24 × 42 =
  36. 36.Digital root of 38727 =
  37. 37.Digital root of 61108 =
  38. 38.Digital root of 60 × 40 =
  39. 39.Digital root of 41600 =
  40. 40.Digital root of 28 × 83 =

Answer key

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

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