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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 505 · 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 89 × 97 =
  2. 2.Digital root of 15 × 60 =
  3. 3.Digital root of 37259 =
  4. 4.Digital root of 93 × 19 =
  5. 5.Digital root of 61 × 98 =
  6. 6.Digital root of 36071 =
  7. 7.Digital root of 98 × 44 =
  8. 8.Digital root of 96 × 69 =
  9. 9.Digital root of 35 × 91 =
  10. 10.Digital root of 72 × 55 =
  11. 11.Digital root of 45498 =
  12. 12.Digital root of 71 × 84 =
  13. 13.Digital root of 30334 =
  14. 14.Digital root of 95 × 62 =
  15. 15.Digital root of 1087 =
  16. 16.Digital root of 35 × 96 =
  17. 17.Digital root of 5885 =
  18. 18.Digital root of 43 × 46 =
  19. 19.Digital root of 91799 =
  20. 20.Digital root of 8775 =
  21. 21.Digital root of 61 × 54 =
  22. 22.Digital root of 55533 =
  23. 23.Digital root of 15 × 75 =
  24. 24.Digital root of 22487 =
  25. 25.Digital root of 97 × 48 =
  26. 26.Digital root of 43 × 72 =
  27. 27.Digital root of 30 × 56 =
  28. 28.Digital root of 60 × 48 =
  29. 29.Digital root of 4838 =
  30. 30.Digital root of 24450 =
  31. 31.Digital root of 27275 =
  32. 32.Digital root of 91393 =
  33. 33.Digital root of 58509 =
  34. 34.Digital root of 29500 =
  35. 35.Digital root of 34 × 58 =
  36. 36.Digital root of 2650 =
  37. 37.Digital root of 78 × 51 =
  38. 38.Digital root of 35 × 91 =
  39. 39.Digital root of 38 × 89 =
  40. 40.Digital root of 84446 =

Answer key

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

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