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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 477 · 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 79747 =
  2. 2.Digital root of 31 × 34 =
  3. 3.Digital root of 65 × 82 =
  4. 4.Digital root of 23 × 36 =
  5. 5.Digital root of 50 × 35 =
  6. 6.Digital root of 25 × 58 =
  7. 7.Digital root of 56 × 86 =
  8. 8.Digital root of 83818 =
  9. 9.Digital root of 99573 =
  10. 10.Digital root of 90353 =
  11. 11.Digital root of 96374 =
  12. 12.Digital root of 22695 =
  13. 13.Digital root of 73 × 55 =
  14. 14.Digital root of 53 × 68 =
  15. 15.Digital root of 24782 =
  16. 16.Digital root of 31 × 81 =
  17. 17.Digital root of 88671 =
  18. 18.Digital root of 27 × 48 =
  19. 19.Digital root of 61273 =
  20. 20.Digital root of 34 × 55 =
  21. 21.Digital root of 21772 =
  22. 22.Digital root of 32 × 20 =
  23. 23.Digital root of 28 × 50 =
  24. 24.Digital root of 63572 =
  25. 25.Digital root of 13526 =
  26. 26.Digital root of 5233 =
  27. 27.Digital root of 94504 =
  28. 28.Digital root of 45407 =
  29. 29.Digital root of 69 × 22 =
  30. 30.Digital root of 26688 =
  31. 31.Digital root of 43169 =
  32. 32.Digital root of 19934 =
  33. 33.Digital root of 71 × 49 =
  34. 34.Digital root of 86515 =
  35. 35.Digital root of 48553 =
  36. 36.Digital root of 18427 =
  37. 37.Digital root of 72136 =
  38. 38.Digital root of 29702 =
  39. 39.Digital root of 87231 =
  40. 40.Digital root of 30609 =

Answer key

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

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