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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 807 · 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 82832 =
  2. 2.Digital root of 46 × 25 =
  3. 3.Digital root of 64 × 64 =
  4. 4.Digital root of 17869 =
  5. 5.Digital root of 77 × 23 =
  6. 6.Digital root of 86 × 20 =
  7. 7.Digital root of 70654 =
  8. 8.Digital root of 65689 =
  9. 9.Digital root of 43 × 25 =
  10. 10.Digital root of 25469 =
  11. 11.Digital root of 65 × 18 =
  12. 12.Digital root of 37 × 27 =
  13. 13.Digital root of 19414 =
  14. 14.Digital root of 42 × 28 =
  15. 15.Digital root of 24 × 77 =
  16. 16.Digital root of 97725 =
  17. 17.Digital root of 22 × 63 =
  18. 18.Digital root of 31 × 65 =
  19. 19.Digital root of 94438 =
  20. 20.Digital root of 41275 =
  21. 21.Digital root of 38 × 56 =
  22. 22.Digital root of 39426 =
  23. 23.Digital root of 30 × 84 =
  24. 24.Digital root of 62 × 51 =
  25. 25.Digital root of 4136 =
  26. 26.Digital root of 44 × 82 =
  27. 27.Digital root of 19071 =
  28. 28.Digital root of 1052 =
  29. 29.Digital root of 51 × 37 =
  30. 30.Digital root of 24 × 25 =
  31. 31.Digital root of 10626 =
  32. 32.Digital root of 8183 =
  33. 33.Digital root of 65 × 12 =
  34. 34.Digital root of 41250 =
  35. 35.Digital root of 11429 =
  36. 36.Digital root of 22493 =
  37. 37.Digital root of 47748 =
  38. 38.Digital root of 26090 =
  39. 39.Digital root of 27869 =
  40. 40.Digital root of 97 × 70 =

Answer key

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

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