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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 987 · 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 27474 =
  2. 2.Digital root of 41 × 19 =
  3. 3.Digital root of 73 × 99 =
  4. 4.Digital root of 91114 =
  5. 5.Digital root of 28 × 31 =
  6. 6.Digital root of 84699 =
  7. 7.Digital root of 66 × 13 =
  8. 8.Digital root of 63 × 98 =
  9. 9.Digital root of 34 × 35 =
  10. 10.Digital root of 93 × 92 =
  11. 11.Digital root of 68627 =
  12. 12.Digital root of 49429 =
  13. 13.Digital root of 59 × 42 =
  14. 14.Digital root of 24452 =
  15. 15.Digital root of 48147 =
  16. 16.Digital root of 6676 =
  17. 17.Digital root of 27707 =
  18. 18.Digital root of 38 × 54 =
  19. 19.Digital root of 61768 =
  20. 20.Digital root of 32592 =
  21. 21.Digital root of 91 × 52 =
  22. 22.Digital root of 55 × 26 =
  23. 23.Digital root of 16 × 71 =
  24. 24.Digital root of 85893 =
  25. 25.Digital root of 16 × 17 =
  26. 26.Digital root of 51470 =
  27. 27.Digital root of 28323 =
  28. 28.Digital root of 6247 =
  29. 29.Digital root of 39292 =
  30. 30.Digital root of 14 × 40 =
  31. 31.Digital root of 82 × 53 =
  32. 32.Digital root of 40 × 53 =
  33. 33.Digital root of 305 =
  34. 34.Digital root of 29130 =
  35. 35.Digital root of 6706 =
  36. 36.Digital root of 27 × 31 =
  37. 37.Digital root of 21 × 70 =
  38. 38.Digital root of 40896 =
  39. 39.Digital root of 29204 =
  40. 40.Digital root of 64 × 96 =

Answer key

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

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