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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 690 · 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 18016 =
  2. 2.Digital root of 267 =
  3. 3.Digital root of 25 × 46 =
  4. 4.Digital root of 73961 =
  5. 5.Digital root of 58751 =
  6. 6.Digital root of 71646 =
  7. 7.Digital root of 73 × 47 =
  8. 8.Digital root of 82 × 98 =
  9. 9.Digital root of 48422 =
  10. 10.Digital root of 37 × 92 =
  11. 11.Digital root of 23 × 62 =
  12. 12.Digital root of 76008 =
  13. 13.Digital root of 65254 =
  14. 14.Digital root of 18293 =
  15. 15.Digital root of 66477 =
  16. 16.Digital root of 32 × 53 =
  17. 17.Digital root of 89 × 70 =
  18. 18.Digital root of 85583 =
  19. 19.Digital root of 52496 =
  20. 20.Digital root of 4390 =
  21. 21.Digital root of 27901 =
  22. 22.Digital root of 95 × 94 =
  23. 23.Digital root of 78 × 49 =
  24. 24.Digital root of 22517 =
  25. 25.Digital root of 42554 =
  26. 26.Digital root of 4851 =
  27. 27.Digital root of 15 × 77 =
  28. 28.Digital root of 48 × 59 =
  29. 29.Digital root of 73 × 40 =
  30. 30.Digital root of 74856 =
  31. 31.Digital root of 96 × 45 =
  32. 32.Digital root of 49 × 32 =
  33. 33.Digital root of 51421 =
  34. 34.Digital root of 15 × 56 =
  35. 35.Digital root of 30 × 90 =
  36. 36.Digital root of 55 × 48 =
  37. 37.Digital root of 20 × 92 =
  38. 38.Digital root of 51 × 42 =
  39. 39.Digital root of 70 × 47 =
  40. 40.Digital root of 35532 =

Answer key

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

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