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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 188 · 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 96163 =
  2. 2.Digital root of 85 × 65 =
  3. 3.Digital root of 12381 =
  4. 4.Digital root of 47578 =
  5. 5.Digital root of 20 × 18 =
  6. 6.Digital root of 44916 =
  7. 7.Digital root of 14 × 81 =
  8. 8.Digital root of 47 × 35 =
  9. 9.Digital root of 96 × 25 =
  10. 10.Digital root of 62 × 54 =
  11. 11.Digital root of 47620 =
  12. 12.Digital root of 59549 =
  13. 13.Digital root of 63615 =
  14. 14.Digital root of 58 × 43 =
  15. 15.Digital root of 24890 =
  16. 16.Digital root of 94 × 82 =
  17. 17.Digital root of 35800 =
  18. 18.Digital root of 42586 =
  19. 19.Digital root of 92 × 27 =
  20. 20.Digital root of 77936 =
  21. 21.Digital root of 81 × 26 =
  22. 22.Digital root of 79460 =
  23. 23.Digital root of 45 × 50 =
  24. 24.Digital root of 68931 =
  25. 25.Digital root of 59415 =
  26. 26.Digital root of 28 × 61 =
  27. 27.Digital root of 53 × 24 =
  28. 28.Digital root of 20712 =
  29. 29.Digital root of 57 × 95 =
  30. 30.Digital root of 43566 =
  31. 31.Digital root of 54870 =
  32. 32.Digital root of 83 × 90 =
  33. 33.Digital root of 97 × 87 =
  34. 34.Digital root of 48308 =
  35. 35.Digital root of 27876 =
  36. 36.Digital root of 1693 =
  37. 37.Digital root of 59650 =
  38. 38.Digital root of 14375 =
  39. 39.Digital root of 16 × 27 =
  40. 40.Digital root of 77 × 66 =

Answer key

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

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