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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 570 · 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 4042 =
  2. 2.Digital root of 74340 =
  3. 3.Digital root of 25 × 20 =
  4. 4.Digital root of 97 × 26 =
  5. 5.Digital root of 63875 =
  6. 6.Digital root of 31 × 77 =
  7. 7.Digital root of 78 × 54 =
  8. 8.Digital root of 30161 =
  9. 9.Digital root of 26 × 22 =
  10. 10.Digital root of 20879 =
  11. 11.Digital root of 56 × 57 =
  12. 12.Digital root of 16038 =
  13. 13.Digital root of 80 × 48 =
  14. 14.Digital root of 20432 =
  15. 15.Digital root of 20627 =
  16. 16.Digital root of 7906 =
  17. 17.Digital root of 98 × 78 =
  18. 18.Digital root of 80893 =
  19. 19.Digital root of 83 × 27 =
  20. 20.Digital root of 43 × 57 =
  21. 21.Digital root of 36888 =
  22. 22.Digital root of 60605 =
  23. 23.Digital root of 61 × 83 =
  24. 24.Digital root of 8558 =
  25. 25.Digital root of 34829 =
  26. 26.Digital root of 92973 =
  27. 27.Digital root of 32523 =
  28. 28.Digital root of 39 × 25 =
  29. 29.Digital root of 69739 =
  30. 30.Digital root of 45 × 93 =
  31. 31.Digital root of 23 × 66 =
  32. 32.Digital root of 5094 =
  33. 33.Digital root of 21 × 58 =
  34. 34.Digital root of 37 × 19 =
  35. 35.Digital root of 51 × 97 =
  36. 36.Digital root of 21 × 91 =
  37. 37.Digital root of 67238 =
  38. 38.Digital root of 89327 =
  39. 39.Digital root of 17155 =
  40. 40.Digital root of 78 × 88 =

Answer key

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

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