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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 652 · 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 36 × 18 =
  2. 2.Digital root of 69 × 65 =
  3. 3.Digital root of 82 × 60 =
  4. 4.Digital root of 59 × 69 =
  5. 5.Digital root of 74335 =
  6. 6.Digital root of 41786 =
  7. 7.Digital root of 21 × 71 =
  8. 8.Digital root of 86 × 16 =
  9. 9.Digital root of 39380 =
  10. 10.Digital root of 53 × 73 =
  11. 11.Digital root of 25 × 95 =
  12. 12.Digital root of 64056 =
  13. 13.Digital root of 38324 =
  14. 14.Digital root of 68073 =
  15. 15.Digital root of 86 × 77 =
  16. 16.Digital root of 27638 =
  17. 17.Digital root of 71 × 41 =
  18. 18.Digital root of 45497 =
  19. 19.Digital root of 71067 =
  20. 20.Digital root of 82 × 92 =
  21. 21.Digital root of 58 × 24 =
  22. 22.Digital root of 16 × 84 =
  23. 23.Digital root of 69634 =
  24. 24.Digital root of 30700 =
  25. 25.Digital root of 14 × 67 =
  26. 26.Digital root of 2379 =
  27. 27.Digital root of 88945 =
  28. 28.Digital root of 79 × 75 =
  29. 29.Digital root of 96 × 23 =
  30. 30.Digital root of 62 × 69 =
  31. 31.Digital root of 71149 =
  32. 32.Digital root of 29 × 21 =
  33. 33.Digital root of 98 × 45 =
  34. 34.Digital root of 96 × 99 =
  35. 35.Digital root of 35 × 33 =
  36. 36.Digital root of 49 × 14 =
  37. 37.Digital root of 2342 =
  38. 38.Digital root of 17 × 27 =
  39. 39.Digital root of 57038 =
  40. 40.Digital root of 30 × 13 =

Answer key

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

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