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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 313 · 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 6224 =
  2. 2.Digital root of 34 × 12 =
  3. 3.Digital root of 67 × 26 =
  4. 4.Digital root of 81 × 76 =
  5. 5.Digital root of 71 × 36 =
  6. 6.Digital root of 81 × 82 =
  7. 7.Digital root of 10242 =
  8. 8.Digital root of 76335 =
  9. 9.Digital root of 98 × 99 =
  10. 10.Digital root of 91008 =
  11. 11.Digital root of 96994 =
  12. 12.Digital root of 28 × 88 =
  13. 13.Digital root of 12 × 56 =
  14. 14.Digital root of 15687 =
  15. 15.Digital root of 48368 =
  16. 16.Digital root of 51 × 27 =
  17. 17.Digital root of 91634 =
  18. 18.Digital root of 8216 =
  19. 19.Digital root of 29 × 51 =
  20. 20.Digital root of 18863 =
  21. 21.Digital root of 62984 =
  22. 22.Digital root of 79214 =
  23. 23.Digital root of 85559 =
  24. 24.Digital root of 16279 =
  25. 25.Digital root of 90 × 68 =
  26. 26.Digital root of 62 × 53 =
  27. 27.Digital root of 11602 =
  28. 28.Digital root of 22008 =
  29. 29.Digital root of 24224 =
  30. 30.Digital root of 88 × 23 =
  31. 31.Digital root of 17 × 49 =
  32. 32.Digital root of 34 × 66 =
  33. 33.Digital root of 64368 =
  34. 34.Digital root of 52563 =
  35. 35.Digital root of 29397 =
  36. 36.Digital root of 17 × 17 =
  37. 37.Digital root of 44 × 84 =
  38. 38.Digital root of 86531 =
  39. 39.Digital root of 63928 =
  40. 40.Digital root of 82 × 27 =

Answer key

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

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