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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 490 · 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 82 × 93 =
  2. 2.Digital root of 77534 =
  3. 3.Digital root of 46242 =
  4. 4.Digital root of 94096 =
  5. 5.Digital root of 49663 =
  6. 6.Digital root of 88 × 40 =
  7. 7.Digital root of 37 × 16 =
  8. 8.Digital root of 44059 =
  9. 9.Digital root of 77543 =
  10. 10.Digital root of 89 × 78 =
  11. 11.Digital root of 65043 =
  12. 12.Digital root of 17927 =
  13. 13.Digital root of 41545 =
  14. 14.Digital root of 94768 =
  15. 15.Digital root of 24160 =
  16. 16.Digital root of 59 × 51 =
  17. 17.Digital root of 23157 =
  18. 18.Digital root of 15 × 87 =
  19. 19.Digital root of 61 × 30 =
  20. 20.Digital root of 85 × 39 =
  21. 21.Digital root of 21177 =
  22. 22.Digital root of 23 × 70 =
  23. 23.Digital root of 38 × 22 =
  24. 24.Digital root of 62198 =
  25. 25.Digital root of 8492 =
  26. 26.Digital root of 38094 =
  27. 27.Digital root of 86187 =
  28. 28.Digital root of 34344 =
  29. 29.Digital root of 40608 =
  30. 30.Digital root of 28357 =
  31. 31.Digital root of 23 × 14 =
  32. 32.Digital root of 36033 =
  33. 33.Digital root of 84486 =
  34. 34.Digital root of 69 × 98 =
  35. 35.Digital root of 57846 =
  36. 36.Digital root of 42490 =
  37. 37.Digital root of 55220 =
  38. 38.Digital root of 98578 =
  39. 39.Digital root of 99374 =
  40. 40.Digital root of 2251 =

Answer key

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

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