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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 633 · 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 55666 =
  2. 2.Digital root of 55 × 23 =
  3. 3.Digital root of 27840 =
  4. 4.Digital root of 33 × 53 =
  5. 5.Digital root of 82 × 85 =
  6. 6.Digital root of 74 × 54 =
  7. 7.Digital root of 43 × 42 =
  8. 8.Digital root of 32 × 82 =
  9. 9.Digital root of 96910 =
  10. 10.Digital root of 15 × 56 =
  11. 11.Digital root of 55 × 28 =
  12. 12.Digital root of 73 × 66 =
  13. 13.Digital root of 79261 =
  14. 14.Digital root of 69 × 51 =
  15. 15.Digital root of 69003 =
  16. 16.Digital root of 89676 =
  17. 17.Digital root of 79507 =
  18. 18.Digital root of 54982 =
  19. 19.Digital root of 67028 =
  20. 20.Digital root of 58 × 97 =
  21. 21.Digital root of 52 × 30 =
  22. 22.Digital root of 57505 =
  23. 23.Digital root of 28 × 41 =
  24. 24.Digital root of 44 × 74 =
  25. 25.Digital root of 12 × 99 =
  26. 26.Digital root of 12 × 56 =
  27. 27.Digital root of 7034 =
  28. 28.Digital root of 82 × 37 =
  29. 29.Digital root of 93788 =
  30. 30.Digital root of 50477 =
  31. 31.Digital root of 79489 =
  32. 32.Digital root of 48410 =
  33. 33.Digital root of 87 × 36 =
  34. 34.Digital root of 16236 =
  35. 35.Digital root of 16 × 66 =
  36. 36.Digital root of 38709 =
  37. 37.Digital root of 12397 =
  38. 38.Digital root of 80 × 25 =
  39. 39.Digital root of 61725 =
  40. 40.Digital root of 14 × 76 =

Answer key

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

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