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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 842 · 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 27 × 34 =
  2. 2.Digital root of 53805 =
  3. 3.Digital root of 54199 =
  4. 4.Digital root of 42611 =
  5. 5.Digital root of 35 × 43 =
  6. 6.Digital root of 87571 =
  7. 7.Digital root of 62 × 75 =
  8. 8.Digital root of 1747 =
  9. 9.Digital root of 12990 =
  10. 10.Digital root of 77 × 79 =
  11. 11.Digital root of 88413 =
  12. 12.Digital root of 25 × 94 =
  13. 13.Digital root of 26448 =
  14. 14.Digital root of 94 × 62 =
  15. 15.Digital root of 34054 =
  16. 16.Digital root of 75419 =
  17. 17.Digital root of 847 =
  18. 18.Digital root of 63485 =
  19. 19.Digital root of 14 × 70 =
  20. 20.Digital root of 48683 =
  21. 21.Digital root of 66 × 62 =
  22. 22.Digital root of 96 × 87 =
  23. 23.Digital root of 88 × 91 =
  24. 24.Digital root of 87504 =
  25. 25.Digital root of 824 =
  26. 26.Digital root of 24765 =
  27. 27.Digital root of 39 × 29 =
  28. 28.Digital root of 93 × 39 =
  29. 29.Digital root of 70 × 90 =
  30. 30.Digital root of 56 × 29 =
  31. 31.Digital root of 38 × 15 =
  32. 32.Digital root of 79 × 64 =
  33. 33.Digital root of 23260 =
  34. 34.Digital root of 80517 =
  35. 35.Digital root of 36 × 62 =
  36. 36.Digital root of 62 × 97 =
  37. 37.Digital root of 47015 =
  38. 38.Digital root of 42739 =
  39. 39.Digital root of 83427 =
  40. 40.Digital root of 16 × 65 =

Answer key

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

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