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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 645 · 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 84205 =
  2. 2.Digital root of 38 × 57 =
  3. 3.Digital root of 53705 =
  4. 4.Digital root of 74 × 37 =
  5. 5.Digital root of 68 × 94 =
  6. 6.Digital root of 12 × 21 =
  7. 7.Digital root of 53 × 73 =
  8. 8.Digital root of 30461 =
  9. 9.Digital root of 89 × 77 =
  10. 10.Digital root of 32184 =
  11. 11.Digital root of 34740 =
  12. 12.Digital root of 56 × 83 =
  13. 13.Digital root of 3410 =
  14. 14.Digital root of 49699 =
  15. 15.Digital root of 60 × 32 =
  16. 16.Digital root of 14906 =
  17. 17.Digital root of 28 × 21 =
  18. 18.Digital root of 65 × 16 =
  19. 19.Digital root of 76851 =
  20. 20.Digital root of 54 × 35 =
  21. 21.Digital root of 9031 =
  22. 22.Digital root of 96946 =
  23. 23.Digital root of 82 × 53 =
  24. 24.Digital root of 35 × 17 =
  25. 25.Digital root of 59033 =
  26. 26.Digital root of 29 × 58 =
  27. 27.Digital root of 71785 =
  28. 28.Digital root of 20 × 97 =
  29. 29.Digital root of 95120 =
  30. 30.Digital root of 186 =
  31. 31.Digital root of 35 × 70 =
  32. 32.Digital root of 20579 =
  33. 33.Digital root of 57367 =
  34. 34.Digital root of 94 × 58 =
  35. 35.Digital root of 69308 =
  36. 36.Digital root of 14 × 48 =
  37. 37.Digital root of 64434 =
  38. 38.Digital root of 17956 =
  39. 39.Digital root of 60 × 91 =
  40. 40.Digital root of 21 × 43 =

Answer key

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

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