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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 111 · 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 27 × 32 =
  2. 2.Digital root of 34983 =
  3. 3.Digital root of 57 × 78 =
  4. 4.Digital root of 66646 =
  5. 5.Digital root of 404 =
  6. 6.Digital root of 62132 =
  7. 7.Digital root of 91 × 44 =
  8. 8.Digital root of 40 × 83 =
  9. 9.Digital root of 66 × 30 =
  10. 10.Digital root of 73 × 70 =
  11. 11.Digital root of 9713 =
  12. 12.Digital root of 90104 =
  13. 13.Digital root of 29 × 40 =
  14. 14.Digital root of 16 × 59 =
  15. 15.Digital root of 34 × 23 =
  16. 16.Digital root of 19 × 48 =
  17. 17.Digital root of 16071 =
  18. 18.Digital root of 97459 =
  19. 19.Digital root of 84 × 46 =
  20. 20.Digital root of 77228 =
  21. 21.Digital root of 99 × 99 =
  22. 22.Digital root of 23 × 56 =
  23. 23.Digital root of 55560 =
  24. 24.Digital root of 3650 =
  25. 25.Digital root of 64013 =
  26. 26.Digital root of 18917 =
  27. 27.Digital root of 74 × 74 =
  28. 28.Digital root of 17 × 12 =
  29. 29.Digital root of 1557 =
  30. 30.Digital root of 20483 =
  31. 31.Digital root of 35226 =
  32. 32.Digital root of 29285 =
  33. 33.Digital root of 33 × 80 =
  34. 34.Digital root of 54885 =
  35. 35.Digital root of 17 × 38 =
  36. 36.Digital root of 85 × 82 =
  37. 37.Digital root of 27 × 78 =
  38. 38.Digital root of 28418 =
  39. 39.Digital root of 69092 =
  40. 40.Digital root of 68900 =

Answer key

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

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