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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 507 · 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 94 × 24 =
  2. 2.Digital root of 58 × 83 =
  3. 3.Digital root of 27896 =
  4. 4.Digital root of 75 × 12 =
  5. 5.Digital root of 46 × 20 =
  6. 6.Digital root of 39299 =
  7. 7.Digital root of 91201 =
  8. 8.Digital root of 99 × 18 =
  9. 9.Digital root of 52 × 79 =
  10. 10.Digital root of 8303 =
  11. 11.Digital root of 47962 =
  12. 12.Digital root of 70 × 58 =
  13. 13.Digital root of 1694 =
  14. 14.Digital root of 65 × 95 =
  15. 15.Digital root of 51 × 20 =
  16. 16.Digital root of 82 × 94 =
  17. 17.Digital root of 23652 =
  18. 18.Digital root of 32 × 16 =
  19. 19.Digital root of 57391 =
  20. 20.Digital root of 57560 =
  21. 21.Digital root of 55 × 35 =
  22. 22.Digital root of 32 × 68 =
  23. 23.Digital root of 75 × 79 =
  24. 24.Digital root of 13 × 21 =
  25. 25.Digital root of 73180 =
  26. 26.Digital root of 11896 =
  27. 27.Digital root of 60 × 37 =
  28. 28.Digital root of 41065 =
  29. 29.Digital root of 97 × 69 =
  30. 30.Digital root of 51640 =
  31. 31.Digital root of 13789 =
  32. 32.Digital root of 26 × 34 =
  33. 33.Digital root of 53 × 92 =
  34. 34.Digital root of 57 × 72 =
  35. 35.Digital root of 31800 =
  36. 36.Digital root of 71800 =
  37. 37.Digital root of 3995 =
  38. 38.Digital root of 17 × 20 =
  39. 39.Digital root of 65 × 47 =
  40. 40.Digital root of 27150 =

Answer key

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

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