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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 92 · 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 68278 =
  2. 2.Digital root of 20 × 42 =
  3. 3.Digital root of 69 × 78 =
  4. 4.Digital root of 26 × 89 =
  5. 5.Digital root of 13596 =
  6. 6.Digital root of 38779 =
  7. 7.Digital root of 57 × 41 =
  8. 8.Digital root of 14 × 78 =
  9. 9.Digital root of 83 × 31 =
  10. 10.Digital root of 19 × 83 =
  11. 11.Digital root of 84 × 63 =
  12. 12.Digital root of 74 × 62 =
  13. 13.Digital root of 16586 =
  14. 14.Digital root of 85 × 86 =
  15. 15.Digital root of 58186 =
  16. 16.Digital root of 72036 =
  17. 17.Digital root of 69818 =
  18. 18.Digital root of 24 × 70 =
  19. 19.Digital root of 53319 =
  20. 20.Digital root of 50 × 24 =
  21. 21.Digital root of 2759 =
  22. 22.Digital root of 8005 =
  23. 23.Digital root of 34862 =
  24. 24.Digital root of 11714 =
  25. 25.Digital root of 76 × 81 =
  26. 26.Digital root of 43 × 58 =
  27. 27.Digital root of 28 × 76 =
  28. 28.Digital root of 21356 =
  29. 29.Digital root of 97 × 64 =
  30. 30.Digital root of 81 × 43 =
  31. 31.Digital root of 60216 =
  32. 32.Digital root of 8788 =
  33. 33.Digital root of 39970 =
  34. 34.Digital root of 33 × 66 =
  35. 35.Digital root of 71049 =
  36. 36.Digital root of 5831 =
  37. 37.Digital root of 2557 =
  38. 38.Digital root of 51851 =
  39. 39.Digital root of 36563 =
  40. 40.Digital root of 68 × 71 =

Answer key

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

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