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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 239 · 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 29 × 14 =
  2. 2.Digital root of 35245 =
  3. 3.Digital root of 27 × 86 =
  4. 4.Digital root of 87469 =
  5. 5.Digital root of 98567 =
  6. 6.Digital root of 41804 =
  7. 7.Digital root of 27104 =
  8. 8.Digital root of 54227 =
  9. 9.Digital root of 64417 =
  10. 10.Digital root of 60301 =
  11. 11.Digital root of 40198 =
  12. 12.Digital root of 15646 =
  13. 13.Digital root of 98533 =
  14. 14.Digital root of 61409 =
  15. 15.Digital root of 91 × 14 =
  16. 16.Digital root of 7598 =
  17. 17.Digital root of 65230 =
  18. 18.Digital root of 95285 =
  19. 19.Digital root of 89 × 20 =
  20. 20.Digital root of 1504 =
  21. 21.Digital root of 45 × 55 =
  22. 22.Digital root of 5298 =
  23. 23.Digital root of 75 × 92 =
  24. 24.Digital root of 50 × 63 =
  25. 25.Digital root of 485 =
  26. 26.Digital root of 18 × 24 =
  27. 27.Digital root of 87348 =
  28. 28.Digital root of 55 × 21 =
  29. 29.Digital root of 81175 =
  30. 30.Digital root of 33398 =
  31. 31.Digital root of 52 × 75 =
  32. 32.Digital root of 49 × 43 =
  33. 33.Digital root of 80 × 46 =
  34. 34.Digital root of 97620 =
  35. 35.Digital root of 53 × 70 =
  36. 36.Digital root of 18 × 22 =
  37. 37.Digital root of 94 × 58 =
  38. 38.Digital root of 54420 =
  39. 39.Digital root of 26 × 32 =
  40. 40.Digital root of 65 × 32 =

Answer key

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

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