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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 568 · 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 79 × 83 =
  2. 2.Digital root of 31 × 96 =
  3. 3.Digital root of 52 × 84 =
  4. 4.Digital root of 43 × 39 =
  5. 5.Digital root of 24763 =
  6. 6.Digital root of 61 × 81 =
  7. 7.Digital root of 64 × 50 =
  8. 8.Digital root of 68534 =
  9. 9.Digital root of 80614 =
  10. 10.Digital root of 82870 =
  11. 11.Digital root of 37 × 41 =
  12. 12.Digital root of 3799 =
  13. 13.Digital root of 40 × 25 =
  14. 14.Digital root of 75800 =
  15. 15.Digital root of 51 × 74 =
  16. 16.Digital root of 69969 =
  17. 17.Digital root of 92 × 64 =
  18. 18.Digital root of 56508 =
  19. 19.Digital root of 43 × 35 =
  20. 20.Digital root of 90 × 74 =
  21. 21.Digital root of 33 × 52 =
  22. 22.Digital root of 7582 =
  23. 23.Digital root of 34458 =
  24. 24.Digital root of 897 =
  25. 25.Digital root of 73446 =
  26. 26.Digital root of 45 × 89 =
  27. 27.Digital root of 90285 =
  28. 28.Digital root of 73370 =
  29. 29.Digital root of 54 × 16 =
  30. 30.Digital root of 99 × 32 =
  31. 31.Digital root of 59 × 86 =
  32. 32.Digital root of 4698 =
  33. 33.Digital root of 66 × 60 =
  34. 34.Digital root of 87 × 12 =
  35. 35.Digital root of 12177 =
  36. 36.Digital root of 26 × 26 =
  37. 37.Digital root of 98652 =
  38. 38.Digital root of 58789 =
  39. 39.Digital root of 70 × 71 =
  40. 40.Digital root of 21467 =

Answer key

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

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