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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 806 · 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 69599 =
  2. 2.Digital root of 75 × 46 =
  3. 3.Digital root of 73 × 46 =
  4. 4.Digital root of 90712 =
  5. 5.Digital root of 84 × 29 =
  6. 6.Digital root of 31 × 43 =
  7. 7.Digital root of 60 × 70 =
  8. 8.Digital root of 61818 =
  9. 9.Digital root of 4778 =
  10. 10.Digital root of 80 × 38 =
  11. 11.Digital root of 53 × 22 =
  12. 12.Digital root of 20254 =
  13. 13.Digital root of 86399 =
  14. 14.Digital root of 15 × 45 =
  15. 15.Digital root of 83630 =
  16. 16.Digital root of 84789 =
  17. 17.Digital root of 54 × 59 =
  18. 18.Digital root of 37416 =
  19. 19.Digital root of 41848 =
  20. 20.Digital root of 83674 =
  21. 21.Digital root of 86108 =
  22. 22.Digital root of 33010 =
  23. 23.Digital root of 28309 =
  24. 24.Digital root of 79450 =
  25. 25.Digital root of 71 × 67 =
  26. 26.Digital root of 90 × 63 =
  27. 27.Digital root of 66 × 25 =
  28. 28.Digital root of 23 × 25 =
  29. 29.Digital root of 23 × 94 =
  30. 30.Digital root of 82626 =
  31. 31.Digital root of 19670 =
  32. 32.Digital root of 51110 =
  33. 33.Digital root of 50 × 95 =
  34. 34.Digital root of 60274 =
  35. 35.Digital root of 45025 =
  36. 36.Digital root of 70 × 76 =
  37. 37.Digital root of 97060 =
  38. 38.Digital root of 56 × 73 =
  39. 39.Digital root of 24 × 96 =
  40. 40.Digital root of 15 × 89 =

Answer key

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

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