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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 875 · 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 89 × 16 =
  2. 2.Digital root of 80 × 28 =
  3. 3.Digital root of 47667 =
  4. 4.Digital root of 42853 =
  5. 5.Digital root of 98 × 55 =
  6. 6.Digital root of 81 × 35 =
  7. 7.Digital root of 74188 =
  8. 8.Digital root of 73 × 51 =
  9. 9.Digital root of 66272 =
  10. 10.Digital root of 30 × 95 =
  11. 11.Digital root of 41 × 58 =
  12. 12.Digital root of 581 =
  13. 13.Digital root of 53 × 53 =
  14. 14.Digital root of 28219 =
  15. 15.Digital root of 41 × 75 =
  16. 16.Digital root of 6413 =
  17. 17.Digital root of 4667 =
  18. 18.Digital root of 10267 =
  19. 19.Digital root of 95 × 30 =
  20. 20.Digital root of 61359 =
  21. 21.Digital root of 65068 =
  22. 22.Digital root of 64 × 36 =
  23. 23.Digital root of 42 × 75 =
  24. 24.Digital root of 35 × 33 =
  25. 25.Digital root of 98 × 35 =
  26. 26.Digital root of 26985 =
  27. 27.Digital root of 52693 =
  28. 28.Digital root of 25 × 21 =
  29. 29.Digital root of 64071 =
  30. 30.Digital root of 22 × 76 =
  31. 31.Digital root of 34 × 54 =
  32. 32.Digital root of 20 × 95 =
  33. 33.Digital root of 87266 =
  34. 34.Digital root of 91007 =
  35. 35.Digital root of 62477 =
  36. 36.Digital root of 31 × 17 =
  37. 37.Digital root of 41438 =
  38. 38.Digital root of 23919 =
  39. 39.Digital root of 20 × 65 =
  40. 40.Digital root of 48812 =

Answer key

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

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