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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 435 · 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 50 × 98 =
  2. 2.Digital root of 50413 =
  3. 3.Digital root of 22 × 71 =
  4. 4.Digital root of 16 × 71 =
  5. 5.Digital root of 33 × 64 =
  6. 6.Digital root of 84 × 71 =
  7. 7.Digital root of 79 × 99 =
  8. 8.Digital root of 35 × 83 =
  9. 9.Digital root of 40475 =
  10. 10.Digital root of 58 × 53 =
  11. 11.Digital root of 48 × 91 =
  12. 12.Digital root of 39498 =
  13. 13.Digital root of 20 × 62 =
  14. 14.Digital root of 8043 =
  15. 15.Digital root of 43 × 41 =
  16. 16.Digital root of 98200 =
  17. 17.Digital root of 47737 =
  18. 18.Digital root of 87 × 53 =
  19. 19.Digital root of 91795 =
  20. 20.Digital root of 40 × 73 =
  21. 21.Digital root of 17 × 80 =
  22. 22.Digital root of 26643 =
  23. 23.Digital root of 50 × 68 =
  24. 24.Digital root of 56751 =
  25. 25.Digital root of 18 × 36 =
  26. 26.Digital root of 71207 =
  27. 27.Digital root of 56 × 46 =
  28. 28.Digital root of 39476 =
  29. 29.Digital root of 8253 =
  30. 30.Digital root of 45976 =
  31. 31.Digital root of 61 × 85 =
  32. 32.Digital root of 42449 =
  33. 33.Digital root of 25700 =
  34. 34.Digital root of 81210 =
  35. 35.Digital root of 80 × 89 =
  36. 36.Digital root of 96718 =
  37. 37.Digital root of 47 × 89 =
  38. 38.Digital root of 77251 =
  39. 39.Digital root of 61238 =
  40. 40.Digital root of 27 × 14 =

Answer key

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

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