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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 87 · 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 55 × 36 =
  2. 2.Digital root of 53 × 33 =
  3. 3.Digital root of 55 × 45 =
  4. 4.Digital root of 73 × 41 =
  5. 5.Digital root of 58500 =
  6. 6.Digital root of 51 × 51 =
  7. 7.Digital root of 56 × 70 =
  8. 8.Digital root of 97 × 57 =
  9. 9.Digital root of 59332 =
  10. 10.Digital root of 42 × 82 =
  11. 11.Digital root of 43988 =
  12. 12.Digital root of 48657 =
  13. 13.Digital root of 35670 =
  14. 14.Digital root of 86730 =
  15. 15.Digital root of 30 × 12 =
  16. 16.Digital root of 26 × 16 =
  17. 17.Digital root of 24 × 96 =
  18. 18.Digital root of 64 × 22 =
  19. 19.Digital root of 37 × 87 =
  20. 20.Digital root of 54 × 35 =
  21. 21.Digital root of 20291 =
  22. 22.Digital root of 21 × 94 =
  23. 23.Digital root of 63556 =
  24. 24.Digital root of 3752 =
  25. 25.Digital root of 26 × 22 =
  26. 26.Digital root of 78 × 21 =
  27. 27.Digital root of 82 × 85 =
  28. 28.Digital root of 96635 =
  29. 29.Digital root of 60118 =
  30. 30.Digital root of 24217 =
  31. 31.Digital root of 81 × 95 =
  32. 32.Digital root of 82 × 57 =
  33. 33.Digital root of 57 × 86 =
  34. 34.Digital root of 86 × 26 =
  35. 35.Digital root of 56 × 27 =
  36. 36.Digital root of 55 × 91 =
  37. 37.Digital root of 46 × 43 =
  38. 38.Digital root of 20 × 92 =
  39. 39.Digital root of 51 × 23 =
  40. 40.Digital root of 66429 =

Answer key

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

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