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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 514 · 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 41 × 73 =
  2. 2.Digital root of 8931 =
  3. 3.Digital root of 55 × 72 =
  4. 4.Digital root of 31072 =
  5. 5.Digital root of 95 × 69 =
  6. 6.Digital root of 84311 =
  7. 7.Digital root of 51 × 25 =
  8. 8.Digital root of 54 × 69 =
  9. 9.Digital root of 57495 =
  10. 10.Digital root of 76921 =
  11. 11.Digital root of 78792 =
  12. 12.Digital root of 35 × 56 =
  13. 13.Digital root of 89354 =
  14. 14.Digital root of 34 × 22 =
  15. 15.Digital root of 49 × 37 =
  16. 16.Digital root of 98 × 52 =
  17. 17.Digital root of 43559 =
  18. 18.Digital root of 56366 =
  19. 19.Digital root of 46101 =
  20. 20.Digital root of 58037 =
  21. 21.Digital root of 83225 =
  22. 22.Digital root of 88967 =
  23. 23.Digital root of 54841 =
  24. 24.Digital root of 28665 =
  25. 25.Digital root of 29 × 17 =
  26. 26.Digital root of 49 × 42 =
  27. 27.Digital root of 64 × 80 =
  28. 28.Digital root of 33389 =
  29. 29.Digital root of 11325 =
  30. 30.Digital root of 31075 =
  31. 31.Digital root of 27747 =
  32. 32.Digital root of 97 × 34 =
  33. 33.Digital root of 49297 =
  34. 34.Digital root of 44161 =
  35. 35.Digital root of 1327 =
  36. 36.Digital root of 42 × 76 =
  37. 37.Digital root of 97 × 58 =
  38. 38.Digital root of 61332 =
  39. 39.Digital root of 56737 =
  40. 40.Digital root of 80 × 66 =

Answer key

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

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