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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 42 · 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 19 × 26 =
  2. 2.Digital root of 94 × 14 =
  3. 3.Digital root of 18 × 66 =
  4. 4.Digital root of 57576 =
  5. 5.Digital root of 65859 =
  6. 6.Digital root of 99907 =
  7. 7.Digital root of 62614 =
  8. 8.Digital root of 12 × 83 =
  9. 9.Digital root of 76 × 78 =
  10. 10.Digital root of 20137 =
  11. 11.Digital root of 19533 =
  12. 12.Digital root of 36368 =
  13. 13.Digital root of 62014 =
  14. 14.Digital root of 61490 =
  15. 15.Digital root of 37 × 51 =
  16. 16.Digital root of 21 × 19 =
  17. 17.Digital root of 30412 =
  18. 18.Digital root of 76 × 29 =
  19. 19.Digital root of 33910 =
  20. 20.Digital root of 23 × 98 =
  21. 21.Digital root of 86 × 20 =
  22. 22.Digital root of 17006 =
  23. 23.Digital root of 2551 =
  24. 24.Digital root of 11386 =
  25. 25.Digital root of 41453 =
  26. 26.Digital root of 43 × 55 =
  27. 27.Digital root of 77 × 13 =
  28. 28.Digital root of 16025 =
  29. 29.Digital root of 20 × 67 =
  30. 30.Digital root of 38 × 86 =
  31. 31.Digital root of 11317 =
  32. 32.Digital root of 13 × 66 =
  33. 33.Digital root of 31082 =
  34. 34.Digital root of 77427 =
  35. 35.Digital root of 17615 =
  36. 36.Digital root of 20734 =
  37. 37.Digital root of 89 × 50 =
  38. 38.Digital root of 8207 =
  39. 39.Digital root of 80 × 98 =
  40. 40.Digital root of 73 × 36 =

Answer key

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

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