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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 304 · 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 44860 =
  2. 2.Digital root of 79796 =
  3. 3.Digital root of 82509 =
  4. 4.Digital root of 48018 =
  5. 5.Digital root of 76 × 16 =
  6. 6.Digital root of 21 × 97 =
  7. 7.Digital root of 41 × 26 =
  8. 8.Digital root of 47 × 82 =
  9. 9.Digital root of 86 × 44 =
  10. 10.Digital root of 28 × 17 =
  11. 11.Digital root of 28 × 68 =
  12. 12.Digital root of 13 × 66 =
  13. 13.Digital root of 77 × 65 =
  14. 14.Digital root of 21471 =
  15. 15.Digital root of 90 × 67 =
  16. 16.Digital root of 27 × 60 =
  17. 17.Digital root of 85081 =
  18. 18.Digital root of 97381 =
  19. 19.Digital root of 30621 =
  20. 20.Digital root of 20411 =
  21. 21.Digital root of 27 × 53 =
  22. 22.Digital root of 62285 =
  23. 23.Digital root of 84452 =
  24. 24.Digital root of 4304 =
  25. 25.Digital root of 45 × 66 =
  26. 26.Digital root of 60 × 44 =
  27. 27.Digital root of 32 × 73 =
  28. 28.Digital root of 51 × 98 =
  29. 29.Digital root of 64 × 31 =
  30. 30.Digital root of 38 × 69 =
  31. 31.Digital root of 39 × 60 =
  32. 32.Digital root of 98 × 59 =
  33. 33.Digital root of 98918 =
  34. 34.Digital root of 38869 =
  35. 35.Digital root of 59 × 94 =
  36. 36.Digital root of 83 × 81 =
  37. 37.Digital root of 40375 =
  38. 38.Digital root of 68195 =
  39. 39.Digital root of 44164 =
  40. 40.Digital root of 89 × 54 =

Answer key

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

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