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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 166 · 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 50549 =
  2. 2.Digital root of 32422 =
  3. 3.Digital root of 98561 =
  4. 4.Digital root of 49 × 52 =
  5. 5.Digital root of 43 × 73 =
  6. 6.Digital root of 57738 =
  7. 7.Digital root of 65768 =
  8. 8.Digital root of 86235 =
  9. 9.Digital root of 70893 =
  10. 10.Digital root of 89251 =
  11. 11.Digital root of 11496 =
  12. 12.Digital root of 42096 =
  13. 13.Digital root of 38 × 24 =
  14. 14.Digital root of 93 × 61 =
  15. 15.Digital root of 54 × 64 =
  16. 16.Digital root of 10204 =
  17. 17.Digital root of 20 × 89 =
  18. 18.Digital root of 52 × 52 =
  19. 19.Digital root of 4227 =
  20. 20.Digital root of 31 × 49 =
  21. 21.Digital root of 70039 =
  22. 22.Digital root of 72243 =
  23. 23.Digital root of 91 × 81 =
  24. 24.Digital root of 85127 =
  25. 25.Digital root of 74810 =
  26. 26.Digital root of 49879 =
  27. 27.Digital root of 91 × 35 =
  28. 28.Digital root of 14 × 63 =
  29. 29.Digital root of 19165 =
  30. 30.Digital root of 94265 =
  31. 31.Digital root of 44768 =
  32. 32.Digital root of 90697 =
  33. 33.Digital root of 75356 =
  34. 34.Digital root of 28002 =
  35. 35.Digital root of 21931 =
  36. 36.Digital root of 73 × 55 =
  37. 37.Digital root of 56 × 55 =
  38. 38.Digital root of 69 × 64 =
  39. 39.Digital root of 79 × 94 =
  40. 40.Digital root of 63 × 83 =

Answer key

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

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