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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 873 · 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 96 × 68 =
  2. 2.Digital root of 87 × 80 =
  3. 3.Digital root of 65 × 68 =
  4. 4.Digital root of 16 × 56 =
  5. 5.Digital root of 67012 =
  6. 6.Digital root of 42 × 48 =
  7. 7.Digital root of 83 × 40 =
  8. 8.Digital root of 51988 =
  9. 9.Digital root of 81 × 17 =
  10. 10.Digital root of 3675 =
  11. 11.Digital root of 12 × 59 =
  12. 12.Digital root of 39 × 87 =
  13. 13.Digital root of 40 × 53 =
  14. 14.Digital root of 68942 =
  15. 15.Digital root of 92 × 43 =
  16. 16.Digital root of 35449 =
  17. 17.Digital root of 48100 =
  18. 18.Digital root of 32444 =
  19. 19.Digital root of 86991 =
  20. 20.Digital root of 46 × 32 =
  21. 21.Digital root of 97348 =
  22. 22.Digital root of 742 =
  23. 23.Digital root of 27146 =
  24. 24.Digital root of 68 × 89 =
  25. 25.Digital root of 97 × 33 =
  26. 26.Digital root of 61333 =
  27. 27.Digital root of 55651 =
  28. 28.Digital root of 60507 =
  29. 29.Digital root of 67 × 22 =
  30. 30.Digital root of 18874 =
  31. 31.Digital root of 59020 =
  32. 32.Digital root of 9841 =
  33. 33.Digital root of 16167 =
  34. 34.Digital root of 19 × 85 =
  35. 35.Digital root of 17 × 82 =
  36. 36.Digital root of 1378 =
  37. 37.Digital root of 28 × 76 =
  38. 38.Digital root of 77 × 71 =
  39. 39.Digital root of 59 × 99 =
  40. 40.Digital root of 82423 =

Answer key

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

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