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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 880 · 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 88 × 27 =
  2. 2.Digital root of 43 × 31 =
  3. 3.Digital root of 32 × 14 =
  4. 4.Digital root of 62 × 99 =
  5. 5.Digital root of 25653 =
  6. 6.Digital root of 2993 =
  7. 7.Digital root of 92686 =
  8. 8.Digital root of 65983 =
  9. 9.Digital root of 67968 =
  10. 10.Digital root of 65 × 16 =
  11. 11.Digital root of 2552 =
  12. 12.Digital root of 14559 =
  13. 13.Digital root of 94569 =
  14. 14.Digital root of 12990 =
  15. 15.Digital root of 59 × 68 =
  16. 16.Digital root of 36249 =
  17. 17.Digital root of 80 × 83 =
  18. 18.Digital root of 55 × 14 =
  19. 19.Digital root of 25 × 88 =
  20. 20.Digital root of 48638 =
  21. 21.Digital root of 18 × 19 =
  22. 22.Digital root of 66 × 42 =
  23. 23.Digital root of 37055 =
  24. 24.Digital root of 60042 =
  25. 25.Digital root of 79030 =
  26. 26.Digital root of 31107 =
  27. 27.Digital root of 14848 =
  28. 28.Digital root of 82 × 67 =
  29. 29.Digital root of 14547 =
  30. 30.Digital root of 48322 =
  31. 31.Digital root of 52327 =
  32. 32.Digital root of 69463 =
  33. 33.Digital root of 71 × 71 =
  34. 34.Digital root of 74 × 75 =
  35. 35.Digital root of 52241 =
  36. 36.Digital root of 66 × 95 =
  37. 37.Digital root of 37 × 53 =
  38. 38.Digital root of 1805 =
  39. 39.Digital root of 27483 =
  40. 40.Digital root of 45 × 83 =

Answer key

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

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