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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 750 · 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 65 × 87 =
  2. 2.Digital root of 84367 =
  3. 3.Digital root of 43818 =
  4. 4.Digital root of 30 × 81 =
  5. 5.Digital root of 37 × 96 =
  6. 6.Digital root of 66 × 57 =
  7. 7.Digital root of 87994 =
  8. 8.Digital root of 75237 =
  9. 9.Digital root of 51479 =
  10. 10.Digital root of 91 × 82 =
  11. 11.Digital root of 31178 =
  12. 12.Digital root of 44 × 14 =
  13. 13.Digital root of 51226 =
  14. 14.Digital root of 5879 =
  15. 15.Digital root of 64854 =
  16. 16.Digital root of 40 × 68 =
  17. 17.Digital root of 8184 =
  18. 18.Digital root of 40482 =
  19. 19.Digital root of 84740 =
  20. 20.Digital root of 86 × 92 =
  21. 21.Digital root of 97 × 54 =
  22. 22.Digital root of 75747 =
  23. 23.Digital root of 7405 =
  24. 24.Digital root of 25443 =
  25. 25.Digital root of 47 × 54 =
  26. 26.Digital root of 24 × 17 =
  27. 27.Digital root of 87690 =
  28. 28.Digital root of 19456 =
  29. 29.Digital root of 98 × 87 =
  30. 30.Digital root of 95 × 17 =
  31. 31.Digital root of 11721 =
  32. 32.Digital root of 57365 =
  33. 33.Digital root of 34 × 16 =
  34. 34.Digital root of 56 × 75 =
  35. 35.Digital root of 17 × 74 =
  36. 36.Digital root of 1644 =
  37. 37.Digital root of 37 × 65 =
  38. 38.Digital root of 66121 =
  39. 39.Digital root of 4482 =
  40. 40.Digital root of 26344 =

Answer key

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

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