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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 247 · 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 75390 =
  2. 2.Digital root of 54986 =
  3. 3.Digital root of 33 × 44 =
  4. 4.Digital root of 23 × 12 =
  5. 5.Digital root of 52068 =
  6. 6.Digital root of 57 × 20 =
  7. 7.Digital root of 52271 =
  8. 8.Digital root of 55 × 66 =
  9. 9.Digital root of 71 × 38 =
  10. 10.Digital root of 91863 =
  11. 11.Digital root of 38 × 89 =
  12. 12.Digital root of 35 × 78 =
  13. 13.Digital root of 32268 =
  14. 14.Digital root of 16 × 36 =
  15. 15.Digital root of 87 × 51 =
  16. 16.Digital root of 75 × 30 =
  17. 17.Digital root of 38977 =
  18. 18.Digital root of 86 × 91 =
  19. 19.Digital root of 20 × 16 =
  20. 20.Digital root of 15 × 80 =
  21. 21.Digital root of 77 × 45 =
  22. 22.Digital root of 3969 =
  23. 23.Digital root of 35 × 44 =
  24. 24.Digital root of 2897 =
  25. 25.Digital root of 4800 =
  26. 26.Digital root of 32236 =
  27. 27.Digital root of 79 × 23 =
  28. 28.Digital root of 81593 =
  29. 29.Digital root of 60 × 92 =
  30. 30.Digital root of 82 × 15 =
  31. 31.Digital root of 44 × 51 =
  32. 32.Digital root of 33 × 49 =
  33. 33.Digital root of 15605 =
  34. 34.Digital root of 57 × 78 =
  35. 35.Digital root of 39343 =
  36. 36.Digital root of 21 × 95 =
  37. 37.Digital root of 41 × 40 =
  38. 38.Digital root of 20 × 72 =
  39. 39.Digital root of 3535 =
  40. 40.Digital root of 53 × 37 =

Answer key

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

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