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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 492 · 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 15 × 13 =
  2. 2.Digital root of 58 × 28 =
  3. 3.Digital root of 56126 =
  4. 4.Digital root of 80 × 48 =
  5. 5.Digital root of 42930 =
  6. 6.Digital root of 46586 =
  7. 7.Digital root of 47 × 82 =
  8. 8.Digital root of 98 × 54 =
  9. 9.Digital root of 14473 =
  10. 10.Digital root of 33 × 98 =
  11. 11.Digital root of 45201 =
  12. 12.Digital root of 65699 =
  13. 13.Digital root of 43 × 89 =
  14. 14.Digital root of 80201 =
  15. 15.Digital root of 85930 =
  16. 16.Digital root of 32 × 26 =
  17. 17.Digital root of 90 × 78 =
  18. 18.Digital root of 52 × 60 =
  19. 19.Digital root of 42 × 42 =
  20. 20.Digital root of 16 × 24 =
  21. 21.Digital root of 79 × 62 =
  22. 22.Digital root of 62111 =
  23. 23.Digital root of 94124 =
  24. 24.Digital root of 49041 =
  25. 25.Digital root of 86915 =
  26. 26.Digital root of 15306 =
  27. 27.Digital root of 23372 =
  28. 28.Digital root of 62 × 40 =
  29. 29.Digital root of 43 × 58 =
  30. 30.Digital root of 16 × 23 =
  31. 31.Digital root of 81 × 26 =
  32. 32.Digital root of 99257 =
  33. 33.Digital root of 19749 =
  34. 34.Digital root of 81230 =
  35. 35.Digital root of 36758 =
  36. 36.Digital root of 2702 =
  37. 37.Digital root of 84721 =
  38. 38.Digital root of 31464 =
  39. 39.Digital root of 68 × 65 =
  40. 40.Digital root of 62994 =

Answer key

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

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