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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 421 · 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 21808 =
  2. 2.Digital root of 19 × 28 =
  3. 3.Digital root of 20112 =
  4. 4.Digital root of 58 × 86 =
  5. 5.Digital root of 69362 =
  6. 6.Digital root of 95 × 93 =
  7. 7.Digital root of 70786 =
  8. 8.Digital root of 9722 =
  9. 9.Digital root of 32915 =
  10. 10.Digital root of 70 × 37 =
  11. 11.Digital root of 41360 =
  12. 12.Digital root of 55 × 37 =
  13. 13.Digital root of 64 × 44 =
  14. 14.Digital root of 12614 =
  15. 15.Digital root of 48333 =
  16. 16.Digital root of 57 × 78 =
  17. 17.Digital root of 93540 =
  18. 18.Digital root of 56791 =
  19. 19.Digital root of 43 × 40 =
  20. 20.Digital root of 5441 =
  21. 21.Digital root of 59 × 53 =
  22. 22.Digital root of 99 × 26 =
  23. 23.Digital root of 39619 =
  24. 24.Digital root of 5724 =
  25. 25.Digital root of 5576 =
  26. 26.Digital root of 96 × 43 =
  27. 27.Digital root of 59740 =
  28. 28.Digital root of 61847 =
  29. 29.Digital root of 80405 =
  30. 30.Digital root of 17 × 29 =
  31. 31.Digital root of 98235 =
  32. 32.Digital root of 43 × 57 =
  33. 33.Digital root of 23 × 41 =
  34. 34.Digital root of 89547 =
  35. 35.Digital root of 93 × 66 =
  36. 36.Digital root of 94785 =
  37. 37.Digital root of 90 × 25 =
  38. 38.Digital root of 55933 =
  39. 39.Digital root of 87 × 93 =
  40. 40.Digital root of 49095 =

Answer key

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

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