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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 443 · 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 93 × 72 =
  2. 2.Digital root of 64531 =
  3. 3.Digital root of 32996 =
  4. 4.Digital root of 71447 =
  5. 5.Digital root of 80 × 77 =
  6. 6.Digital root of 11314 =
  7. 7.Digital root of 53224 =
  8. 8.Digital root of 37 × 94 =
  9. 9.Digital root of 43 × 69 =
  10. 10.Digital root of 33505 =
  11. 11.Digital root of 45 × 48 =
  12. 12.Digital root of 36223 =
  13. 13.Digital root of 29196 =
  14. 14.Digital root of 26 × 38 =
  15. 15.Digital root of 68 × 46 =
  16. 16.Digital root of 74 × 55 =
  17. 17.Digital root of 18 × 84 =
  18. 18.Digital root of 25 × 54 =
  19. 19.Digital root of 90 × 67 =
  20. 20.Digital root of 15370 =
  21. 21.Digital root of 37401 =
  22. 22.Digital root of 42425 =
  23. 23.Digital root of 81 × 15 =
  24. 24.Digital root of 55845 =
  25. 25.Digital root of 43 × 58 =
  26. 26.Digital root of 55 × 86 =
  27. 27.Digital root of 52 × 58 =
  28. 28.Digital root of 58 × 69 =
  29. 29.Digital root of 16 × 38 =
  30. 30.Digital root of 62453 =
  31. 31.Digital root of 38 × 96 =
  32. 32.Digital root of 13803 =
  33. 33.Digital root of 37 × 38 =
  34. 34.Digital root of 24278 =
  35. 35.Digital root of 85 × 90 =
  36. 36.Digital root of 18735 =
  37. 37.Digital root of 84 × 42 =
  38. 38.Digital root of 76 × 17 =
  39. 39.Digital root of 96765 =
  40. 40.Digital root of 86 × 57 =

Answer key

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

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