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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 284 · 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 67 × 36 =
  2. 2.Digital root of 69 × 20 =
  3. 3.Digital root of 56 × 72 =
  4. 4.Digital root of 26 × 81 =
  5. 5.Digital root of 66 × 84 =
  6. 6.Digital root of 9440 =
  7. 7.Digital root of 55068 =
  8. 8.Digital root of 24797 =
  9. 9.Digital root of 50 × 51 =
  10. 10.Digital root of 49660 =
  11. 11.Digital root of 32 × 71 =
  12. 12.Digital root of 42730 =
  13. 13.Digital root of 26161 =
  14. 14.Digital root of 11037 =
  15. 15.Digital root of 27858 =
  16. 16.Digital root of 41412 =
  17. 17.Digital root of 71882 =
  18. 18.Digital root of 79694 =
  19. 19.Digital root of 29 × 97 =
  20. 20.Digital root of 8798 =
  21. 21.Digital root of 18422 =
  22. 22.Digital root of 31 × 62 =
  23. 23.Digital root of 15412 =
  24. 24.Digital root of 66 × 24 =
  25. 25.Digital root of 31 × 65 =
  26. 26.Digital root of 17934 =
  27. 27.Digital root of 8134 =
  28. 28.Digital root of 58 × 82 =
  29. 29.Digital root of 27350 =
  30. 30.Digital root of 61 × 56 =
  31. 31.Digital root of 98 × 64 =
  32. 32.Digital root of 21 × 90 =
  33. 33.Digital root of 85 × 89 =
  34. 34.Digital root of 31 × 77 =
  35. 35.Digital root of 76046 =
  36. 36.Digital root of 56 × 52 =
  37. 37.Digital root of 83121 =
  38. 38.Digital root of 64307 =
  39. 39.Digital root of 93 × 72 =
  40. 40.Digital root of 72 × 19 =

Answer key

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

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