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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 361 · 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 48285 =
  2. 2.Digital root of 21 × 37 =
  3. 3.Digital root of 51 × 37 =
  4. 4.Digital root of 17 × 76 =
  5. 5.Digital root of 64 × 18 =
  6. 6.Digital root of 33 × 46 =
  7. 7.Digital root of 15421 =
  8. 8.Digital root of 32875 =
  9. 9.Digital root of 49 × 28 =
  10. 10.Digital root of 79 × 36 =
  11. 11.Digital root of 32 × 78 =
  12. 12.Digital root of 23 × 60 =
  13. 13.Digital root of 61 × 94 =
  14. 14.Digital root of 77 × 35 =
  15. 15.Digital root of 1389 =
  16. 16.Digital root of 60254 =
  17. 17.Digital root of 90816 =
  18. 18.Digital root of 22 × 76 =
  19. 19.Digital root of 44 × 27 =
  20. 20.Digital root of 12 × 39 =
  21. 21.Digital root of 98 × 67 =
  22. 22.Digital root of 55252 =
  23. 23.Digital root of 47 × 66 =
  24. 24.Digital root of 20 × 83 =
  25. 25.Digital root of 89975 =
  26. 26.Digital root of 89719 =
  27. 27.Digital root of 26325 =
  28. 28.Digital root of 37 × 65 =
  29. 29.Digital root of 61 × 40 =
  30. 30.Digital root of 83 × 39 =
  31. 31.Digital root of 68 × 98 =
  32. 32.Digital root of 6930 =
  33. 33.Digital root of 22159 =
  34. 34.Digital root of 49 × 86 =
  35. 35.Digital root of 53 × 66 =
  36. 36.Digital root of 99432 =
  37. 37.Digital root of 84 × 89 =
  38. 38.Digital root of 76 × 63 =
  39. 39.Digital root of 36 × 74 =
  40. 40.Digital root of 6356 =

Answer key

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

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