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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 329 · 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 24575 =
  2. 2.Digital root of 92 × 39 =
  3. 3.Digital root of 50704 =
  4. 4.Digital root of 97767 =
  5. 5.Digital root of 28176 =
  6. 6.Digital root of 91548 =
  7. 7.Digital root of 41 × 18 =
  8. 8.Digital root of 15514 =
  9. 9.Digital root of 22 × 53 =
  10. 10.Digital root of 99 × 51 =
  11. 11.Digital root of 36 × 57 =
  12. 12.Digital root of 17208 =
  13. 13.Digital root of 9088 =
  14. 14.Digital root of 82 × 38 =
  15. 15.Digital root of 70 × 73 =
  16. 16.Digital root of 4915 =
  17. 17.Digital root of 17 × 56 =
  18. 18.Digital root of 76 × 91 =
  19. 19.Digital root of 41967 =
  20. 20.Digital root of 29379 =
  21. 21.Digital root of 43 × 84 =
  22. 22.Digital root of 11808 =
  23. 23.Digital root of 84 × 65 =
  24. 24.Digital root of 20 × 23 =
  25. 25.Digital root of 48971 =
  26. 26.Digital root of 68660 =
  27. 27.Digital root of 18104 =
  28. 28.Digital root of 97301 =
  29. 29.Digital root of 49978 =
  30. 30.Digital root of 24132 =
  31. 31.Digital root of 24 × 20 =
  32. 32.Digital root of 46 × 35 =
  33. 33.Digital root of 66 × 57 =
  34. 34.Digital root of 86212 =
  35. 35.Digital root of 63720 =
  36. 36.Digital root of 1606 =
  37. 37.Digital root of 7192 =
  38. 38.Digital root of 81228 =
  39. 39.Digital root of 29507 =
  40. 40.Digital root of 98920 =

Answer key

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

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