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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 33 · 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 16 × 14 =
  2. 2.Digital root of 30 × 27 =
  3. 3.Digital root of 67 × 53 =
  4. 4.Digital root of 20928 =
  5. 5.Digital root of 27 × 37 =
  6. 6.Digital root of 76 × 32 =
  7. 7.Digital root of 44739 =
  8. 8.Digital root of 33188 =
  9. 9.Digital root of 53 × 31 =
  10. 10.Digital root of 37 × 81 =
  11. 11.Digital root of 60 × 17 =
  12. 12.Digital root of 30 × 60 =
  13. 13.Digital root of 39 × 88 =
  14. 14.Digital root of 69277 =
  15. 15.Digital root of 20 × 71 =
  16. 16.Digital root of 80 × 38 =
  17. 17.Digital root of 21361 =
  18. 18.Digital root of 54452 =
  19. 19.Digital root of 43793 =
  20. 20.Digital root of 38010 =
  21. 21.Digital root of 10975 =
  22. 22.Digital root of 41 × 65 =
  23. 23.Digital root of 46133 =
  24. 24.Digital root of 80 × 81 =
  25. 25.Digital root of 87 × 36 =
  26. 26.Digital root of 84355 =
  27. 27.Digital root of 1994 =
  28. 28.Digital root of 19 × 17 =
  29. 29.Digital root of 21 × 97 =
  30. 30.Digital root of 28 × 62 =
  31. 31.Digital root of 36 × 65 =
  32. 32.Digital root of 20470 =
  33. 33.Digital root of 19 × 19 =
  34. 34.Digital root of 77210 =
  35. 35.Digital root of 73 × 75 =
  36. 36.Digital root of 74 × 14 =
  37. 37.Digital root of 50 × 41 =
  38. 38.Digital root of 83 × 94 =
  39. 39.Digital root of 26 × 69 =
  40. 40.Digital root of 7795 =

Answer key

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

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