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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 244 · 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 34 × 50 =
  2. 2.Digital root of 34 × 61 =
  3. 3.Digital root of 65667 =
  4. 4.Digital root of 20 × 96 =
  5. 5.Digital root of 27889 =
  6. 6.Digital root of 94 × 88 =
  7. 7.Digital root of 66278 =
  8. 8.Digital root of 15 × 85 =
  9. 9.Digital root of 76 × 57 =
  10. 10.Digital root of 50 × 84 =
  11. 11.Digital root of 20 × 62 =
  12. 12.Digital root of 12978 =
  13. 13.Digital root of 55560 =
  14. 14.Digital root of 5896 =
  15. 15.Digital root of 71028 =
  16. 16.Digital root of 33 × 54 =
  17. 17.Digital root of 76 × 68 =
  18. 18.Digital root of 54 × 55 =
  19. 19.Digital root of 2223 =
  20. 20.Digital root of 91 × 53 =
  21. 21.Digital root of 66 × 25 =
  22. 22.Digital root of 55 × 88 =
  23. 23.Digital root of 45 × 42 =
  24. 24.Digital root of 94665 =
  25. 25.Digital root of 35 × 69 =
  26. 26.Digital root of 31942 =
  27. 27.Digital root of 63797 =
  28. 28.Digital root of 70 × 69 =
  29. 29.Digital root of 13 × 33 =
  30. 30.Digital root of 92 × 14 =
  31. 31.Digital root of 29511 =
  32. 32.Digital root of 69218 =
  33. 33.Digital root of 31 × 77 =
  34. 34.Digital root of 67033 =
  35. 35.Digital root of 36775 =
  36. 36.Digital root of 89648 =
  37. 37.Digital root of 54 × 13 =
  38. 38.Digital root of 74816 =
  39. 39.Digital root of 82 × 33 =
  40. 40.Digital root of 18 × 66 =

Answer key

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

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