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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 280 · 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 18039 =
  2. 2.Digital root of 87 × 39 =
  3. 3.Digital root of 93461 =
  4. 4.Digital root of 17687 =
  5. 5.Digital root of 27 × 67 =
  6. 6.Digital root of 82504 =
  7. 7.Digital root of 17589 =
  8. 8.Digital root of 62 × 47 =
  9. 9.Digital root of 90886 =
  10. 10.Digital root of 82 × 82 =
  11. 11.Digital root of 29 × 32 =
  12. 12.Digital root of 70 × 83 =
  13. 13.Digital root of 10540 =
  14. 14.Digital root of 62138 =
  15. 15.Digital root of 8261 =
  16. 16.Digital root of 37 × 24 =
  17. 17.Digital root of 77 × 84 =
  18. 18.Digital root of 84715 =
  19. 19.Digital root of 42873 =
  20. 20.Digital root of 66 × 61 =
  21. 21.Digital root of 81 × 18 =
  22. 22.Digital root of 99066 =
  23. 23.Digital root of 42 × 42 =
  24. 24.Digital root of 94 × 23 =
  25. 25.Digital root of 34 × 66 =
  26. 26.Digital root of 14 × 57 =
  27. 27.Digital root of 54035 =
  28. 28.Digital root of 36821 =
  29. 29.Digital root of 99909 =
  30. 30.Digital root of 91 × 39 =
  31. 31.Digital root of 79 × 73 =
  32. 32.Digital root of 14355 =
  33. 33.Digital root of 37191 =
  34. 34.Digital root of 61 × 91 =
  35. 35.Digital root of 18 × 63 =
  36. 36.Digital root of 56 × 22 =
  37. 37.Digital root of 13343 =
  38. 38.Digital root of 42 × 21 =
  39. 39.Digital root of 60 × 80 =
  40. 40.Digital root of 68259 =

Answer key

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

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