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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 659 · 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 56632 =
  2. 2.Digital root of 41 × 49 =
  3. 3.Digital root of 27303 =
  4. 4.Digital root of 19163 =
  5. 5.Digital root of 36 × 79 =
  6. 6.Digital root of 30 × 81 =
  7. 7.Digital root of 33 × 66 =
  8. 8.Digital root of 60 × 94 =
  9. 9.Digital root of 75 × 60 =
  10. 10.Digital root of 31 × 95 =
  11. 11.Digital root of 52 × 32 =
  12. 12.Digital root of 55753 =
  13. 13.Digital root of 11619 =
  14. 14.Digital root of 74 × 25 =
  15. 15.Digital root of 6343 =
  16. 16.Digital root of 63 × 24 =
  17. 17.Digital root of 51 × 84 =
  18. 18.Digital root of 9780 =
  19. 19.Digital root of 84314 =
  20. 20.Digital root of 43 × 90 =
  21. 21.Digital root of 41339 =
  22. 22.Digital root of 63 × 99 =
  23. 23.Digital root of 21 × 62 =
  24. 24.Digital root of 33020 =
  25. 25.Digital root of 32 × 79 =
  26. 26.Digital root of 22060 =
  27. 27.Digital root of 19 × 72 =
  28. 28.Digital root of 78063 =
  29. 29.Digital root of 19952 =
  30. 30.Digital root of 87833 =
  31. 31.Digital root of 48370 =
  32. 32.Digital root of 32 × 37 =
  33. 33.Digital root of 73 × 25 =
  34. 34.Digital root of 50411 =
  35. 35.Digital root of 76460 =
  36. 36.Digital root of 37865 =
  37. 37.Digital root of 99988 =
  38. 38.Digital root of 20 × 89 =
  39. 39.Digital root of 46131 =
  40. 40.Digital root of 34 × 53 =

Answer key

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

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