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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 203 · 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 51811 =
  2. 2.Digital root of 61289 =
  3. 3.Digital root of 32 × 15 =
  4. 4.Digital root of 16 × 27 =
  5. 5.Digital root of 84385 =
  6. 6.Digital root of 1764 =
  7. 7.Digital root of 61 × 60 =
  8. 8.Digital root of 21 × 56 =
  9. 9.Digital root of 79182 =
  10. 10.Digital root of 65595 =
  11. 11.Digital root of 67 × 12 =
  12. 12.Digital root of 21 × 24 =
  13. 13.Digital root of 94178 =
  14. 14.Digital root of 83 × 31 =
  15. 15.Digital root of 96 × 22 =
  16. 16.Digital root of 99567 =
  17. 17.Digital root of 60174 =
  18. 18.Digital root of 96565 =
  19. 19.Digital root of 92547 =
  20. 20.Digital root of 14 × 71 =
  21. 21.Digital root of 26120 =
  22. 22.Digital root of 92 × 18 =
  23. 23.Digital root of 18771 =
  24. 24.Digital root of 78 × 98 =
  25. 25.Digital root of 53449 =
  26. 26.Digital root of 99 × 75 =
  27. 27.Digital root of 82380 =
  28. 28.Digital root of 60609 =
  29. 29.Digital root of 65955 =
  30. 30.Digital root of 49 × 25 =
  31. 31.Digital root of 79 × 64 =
  32. 32.Digital root of 33 × 13 =
  33. 33.Digital root of 51186 =
  34. 34.Digital root of 2945 =
  35. 35.Digital root of 14099 =
  36. 36.Digital root of 48759 =
  37. 37.Digital root of 17286 =
  38. 38.Digital root of 56509 =
  39. 39.Digital root of 48437 =
  40. 40.Digital root of 42139 =

Answer key

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

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