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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 427 · 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 83 × 62 =
  2. 2.Digital root of 99720 =
  3. 3.Digital root of 65 × 41 =
  4. 4.Digital root of 24545 =
  5. 5.Digital root of 26946 =
  6. 6.Digital root of 11882 =
  7. 7.Digital root of 41164 =
  8. 8.Digital root of 64721 =
  9. 9.Digital root of 79 × 18 =
  10. 10.Digital root of 12749 =
  11. 11.Digital root of 60 × 54 =
  12. 12.Digital root of 27881 =
  13. 13.Digital root of 70629 =
  14. 14.Digital root of 66 × 96 =
  15. 15.Digital root of 49 × 76 =
  16. 16.Digital root of 55 × 60 =
  17. 17.Digital root of 83691 =
  18. 18.Digital root of 89 × 38 =
  19. 19.Digital root of 17 × 52 =
  20. 20.Digital root of 47 × 45 =
  21. 21.Digital root of 79 × 62 =
  22. 22.Digital root of 79 × 60 =
  23. 23.Digital root of 79 × 72 =
  24. 24.Digital root of 93 × 16 =
  25. 25.Digital root of 14 × 79 =
  26. 26.Digital root of 37267 =
  27. 27.Digital root of 93 × 13 =
  28. 28.Digital root of 45694 =
  29. 29.Digital root of 67 × 69 =
  30. 30.Digital root of 42 × 32 =
  31. 31.Digital root of 58109 =
  32. 32.Digital root of 90 × 27 =
  33. 33.Digital root of 41196 =
  34. 34.Digital root of 42 × 67 =
  35. 35.Digital root of 33843 =
  36. 36.Digital root of 23743 =
  37. 37.Digital root of 29 × 69 =
  38. 38.Digital root of 40 × 25 =
  39. 39.Digital root of 8211 =
  40. 40.Digital root of 26 × 60 =

Answer key

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

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