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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 11 · 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 17864 =
  2. 2.Digital root of 38500 =
  3. 3.Digital root of 68 × 31 =
  4. 4.Digital root of 82 × 20 =
  5. 5.Digital root of 9490 =
  6. 6.Digital root of 87285 =
  7. 7.Digital root of 46489 =
  8. 8.Digital root of 49 × 95 =
  9. 9.Digital root of 75366 =
  10. 10.Digital root of 69304 =
  11. 11.Digital root of 5917 =
  12. 12.Digital root of 28263 =
  13. 13.Digital root of 37 × 76 =
  14. 14.Digital root of 33352 =
  15. 15.Digital root of 30841 =
  16. 16.Digital root of 33409 =
  17. 17.Digital root of 72934 =
  18. 18.Digital root of 18869 =
  19. 19.Digital root of 79681 =
  20. 20.Digital root of 80 × 41 =
  21. 21.Digital root of 28 × 13 =
  22. 22.Digital root of 66142 =
  23. 23.Digital root of 70 × 14 =
  24. 24.Digital root of 12 × 92 =
  25. 25.Digital root of 77 × 72 =
  26. 26.Digital root of 88149 =
  27. 27.Digital root of 89 × 85 =
  28. 28.Digital root of 76 × 22 =
  29. 29.Digital root of 73294 =
  30. 30.Digital root of 71 × 21 =
  31. 31.Digital root of 20852 =
  32. 32.Digital root of 96292 =
  33. 33.Digital root of 58783 =
  34. 34.Digital root of 82045 =
  35. 35.Digital root of 77859 =
  36. 36.Digital root of 82 × 71 =
  37. 37.Digital root of 46 × 78 =
  38. 38.Digital root of 79995 =
  39. 39.Digital root of 67 × 76 =
  40. 40.Digital root of 47 × 18 =

Answer key

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

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