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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 727 · 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 61 × 34 =
  2. 2.Digital root of 56 × 42 =
  3. 3.Digital root of 27269 =
  4. 4.Digital root of 5916 =
  5. 5.Digital root of 25392 =
  6. 6.Digital root of 14972 =
  7. 7.Digital root of 99 × 80 =
  8. 8.Digital root of 83709 =
  9. 9.Digital root of 86 × 65 =
  10. 10.Digital root of 20 × 38 =
  11. 11.Digital root of 81987 =
  12. 12.Digital root of 9157 =
  13. 13.Digital root of 32 × 86 =
  14. 14.Digital root of 23488 =
  15. 15.Digital root of 25 × 91 =
  16. 16.Digital root of 12798 =
  17. 17.Digital root of 30 × 12 =
  18. 18.Digital root of 53 × 65 =
  19. 19.Digital root of 69 × 98 =
  20. 20.Digital root of 59451 =
  21. 21.Digital root of 96317 =
  22. 22.Digital root of 26981 =
  23. 23.Digital root of 87 × 67 =
  24. 24.Digital root of 66 × 44 =
  25. 25.Digital root of 34889 =
  26. 26.Digital root of 70591 =
  27. 27.Digital root of 25148 =
  28. 28.Digital root of 54370 =
  29. 29.Digital root of 26349 =
  30. 30.Digital root of 69644 =
  31. 31.Digital root of 45 × 63 =
  32. 32.Digital root of 28034 =
  33. 33.Digital root of 30 × 78 =
  34. 34.Digital root of 23 × 64 =
  35. 35.Digital root of 12054 =
  36. 36.Digital root of 5174 =
  37. 37.Digital root of 85635 =
  38. 38.Digital root of 91082 =
  39. 39.Digital root of 15 × 18 =
  40. 40.Digital root of 76723 =

Answer key

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

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