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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 506 · 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 5386 =
  2. 2.Digital root of 72 × 14 =
  3. 3.Digital root of 17976 =
  4. 4.Digital root of 42544 =
  5. 5.Digital root of 66591 =
  6. 6.Digital root of 61993 =
  7. 7.Digital root of 84 × 89 =
  8. 8.Digital root of 23 × 73 =
  9. 9.Digital root of 82533 =
  10. 10.Digital root of 61 × 26 =
  11. 11.Digital root of 18920 =
  12. 12.Digital root of 71 × 72 =
  13. 13.Digital root of 75 × 27 =
  14. 14.Digital root of 41234 =
  15. 15.Digital root of 78247 =
  16. 16.Digital root of 25135 =
  17. 17.Digital root of 32534 =
  18. 18.Digital root of 47 × 25 =
  19. 19.Digital root of 32533 =
  20. 20.Digital root of 59 × 47 =
  21. 21.Digital root of 90 × 47 =
  22. 22.Digital root of 43947 =
  23. 23.Digital root of 57 × 14 =
  24. 24.Digital root of 36231 =
  25. 25.Digital root of 39 × 99 =
  26. 26.Digital root of 78 × 34 =
  27. 27.Digital root of 41743 =
  28. 28.Digital root of 62 × 16 =
  29. 29.Digital root of 18180 =
  30. 30.Digital root of 90983 =
  31. 31.Digital root of 62388 =
  32. 32.Digital root of 14850 =
  33. 33.Digital root of 29 × 86 =
  34. 34.Digital root of 56 × 87 =
  35. 35.Digital root of 95562 =
  36. 36.Digital root of 6288 =
  37. 37.Digital root of 45 × 33 =
  38. 38.Digital root of 59 × 27 =
  39. 39.Digital root of 8869 =
  40. 40.Digital root of 7185 =

Answer key

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

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