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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 367 · 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 26074 =
  2. 2.Digital root of 53 × 35 =
  3. 3.Digital root of 6878 =
  4. 4.Digital root of 52101 =
  5. 5.Digital root of 27 × 91 =
  6. 6.Digital root of 36326 =
  7. 7.Digital root of 69809 =
  8. 8.Digital root of 78 × 53 =
  9. 9.Digital root of 39271 =
  10. 10.Digital root of 34 × 97 =
  11. 11.Digital root of 31213 =
  12. 12.Digital root of 1727 =
  13. 13.Digital root of 67 × 49 =
  14. 14.Digital root of 84210 =
  15. 15.Digital root of 53 × 55 =
  16. 16.Digital root of 40 × 17 =
  17. 17.Digital root of 41084 =
  18. 18.Digital root of 38254 =
  19. 19.Digital root of 28 × 65 =
  20. 20.Digital root of 37 × 48 =
  21. 21.Digital root of 39 × 30 =
  22. 22.Digital root of 23 × 34 =
  23. 23.Digital root of 17 × 78 =
  24. 24.Digital root of 39 × 64 =
  25. 25.Digital root of 55993 =
  26. 26.Digital root of 85 × 99 =
  27. 27.Digital root of 33 × 78 =
  28. 28.Digital root of 18931 =
  29. 29.Digital root of 39 × 38 =
  30. 30.Digital root of 71 × 52 =
  31. 31.Digital root of 66 × 20 =
  32. 32.Digital root of 43651 =
  33. 33.Digital root of 28866 =
  34. 34.Digital root of 17 × 22 =
  35. 35.Digital root of 42 × 76 =
  36. 36.Digital root of 23 × 31 =
  37. 37.Digital root of 16816 =
  38. 38.Digital root of 65 × 61 =
  39. 39.Digital root of 83 × 71 =
  40. 40.Digital root of 91639 =

Answer key

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

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