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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 343 · 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 89728 =
  2. 2.Digital root of 31 × 58 =
  3. 3.Digital root of 97 × 37 =
  4. 4.Digital root of 3058 =
  5. 5.Digital root of 2371 =
  6. 6.Digital root of 46 × 25 =
  7. 7.Digital root of 17 × 93 =
  8. 8.Digital root of 21 × 80 =
  9. 9.Digital root of 6219 =
  10. 10.Digital root of 16 × 70 =
  11. 11.Digital root of 43891 =
  12. 12.Digital root of 91 × 31 =
  13. 13.Digital root of 62 × 71 =
  14. 14.Digital root of 16382 =
  15. 15.Digital root of 16992 =
  16. 16.Digital root of 77046 =
  17. 17.Digital root of 70 × 19 =
  18. 18.Digital root of 31 × 21 =
  19. 19.Digital root of 41 × 31 =
  20. 20.Digital root of 58287 =
  21. 21.Digital root of 12 × 77 =
  22. 22.Digital root of 30 × 90 =
  23. 23.Digital root of 24945 =
  24. 24.Digital root of 93566 =
  25. 25.Digital root of 44159 =
  26. 26.Digital root of 22293 =
  27. 27.Digital root of 84588 =
  28. 28.Digital root of 96546 =
  29. 29.Digital root of 69672 =
  30. 30.Digital root of 74 × 21 =
  31. 31.Digital root of 61 × 27 =
  32. 32.Digital root of 54 × 27 =
  33. 33.Digital root of 43 × 57 =
  34. 34.Digital root of 79 × 39 =
  35. 35.Digital root of 67 × 64 =
  36. 36.Digital root of 90026 =
  37. 37.Digital root of 75 × 16 =
  38. 38.Digital root of 24235 =
  39. 39.Digital root of 48 × 15 =
  40. 40.Digital root of 30439 =

Answer key

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

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