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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 510 · 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 50468 =
  2. 2.Digital root of 95 × 34 =
  3. 3.Digital root of 47 × 50 =
  4. 4.Digital root of 1517 =
  5. 5.Digital root of 87 × 49 =
  6. 6.Digital root of 97730 =
  7. 7.Digital root of 15 × 89 =
  8. 8.Digital root of 1238 =
  9. 9.Digital root of 71749 =
  10. 10.Digital root of 39 × 91 =
  11. 11.Digital root of 66665 =
  12. 12.Digital root of 33832 =
  13. 13.Digital root of 20 × 82 =
  14. 14.Digital root of 18126 =
  15. 15.Digital root of 23 × 28 =
  16. 16.Digital root of 54997 =
  17. 17.Digital root of 89 × 70 =
  18. 18.Digital root of 36 × 23 =
  19. 19.Digital root of 63148 =
  20. 20.Digital root of 99537 =
  21. 21.Digital root of 43 × 76 =
  22. 22.Digital root of 97 × 86 =
  23. 23.Digital root of 92577 =
  24. 24.Digital root of 20423 =
  25. 25.Digital root of 33 × 87 =
  26. 26.Digital root of 13207 =
  27. 27.Digital root of 89216 =
  28. 28.Digital root of 78570 =
  29. 29.Digital root of 97 × 58 =
  30. 30.Digital root of 25444 =
  31. 31.Digital root of 50 × 60 =
  32. 32.Digital root of 7367 =
  33. 33.Digital root of 51 × 76 =
  34. 34.Digital root of 4629 =
  35. 35.Digital root of 13 × 88 =
  36. 36.Digital root of 59136 =
  37. 37.Digital root of 71010 =
  38. 38.Digital root of 9525 =
  39. 39.Digital root of 15 × 27 =
  40. 40.Digital root of 23 × 76 =

Answer key

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

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