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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 149 · 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 59 × 25 =
  2. 2.Digital root of 24764 =
  3. 3.Digital root of 37 × 16 =
  4. 4.Digital root of 62441 =
  5. 5.Digital root of 33497 =
  6. 6.Digital root of 29 × 58 =
  7. 7.Digital root of 96519 =
  8. 8.Digital root of 38410 =
  9. 9.Digital root of 37 × 67 =
  10. 10.Digital root of 86 × 19 =
  11. 11.Digital root of 12173 =
  12. 12.Digital root of 90819 =
  13. 13.Digital root of 68 × 91 =
  14. 14.Digital root of 23 × 43 =
  15. 15.Digital root of 42745 =
  16. 16.Digital root of 97 × 43 =
  17. 17.Digital root of 94 × 28 =
  18. 18.Digital root of 2009 =
  19. 19.Digital root of 3932 =
  20. 20.Digital root of 81 × 71 =
  21. 21.Digital root of 89265 =
  22. 22.Digital root of 63510 =
  23. 23.Digital root of 96 × 22 =
  24. 24.Digital root of 52 × 33 =
  25. 25.Digital root of 25 × 19 =
  26. 26.Digital root of 26 × 59 =
  27. 27.Digital root of 95 × 53 =
  28. 28.Digital root of 13 × 59 =
  29. 29.Digital root of 5121 =
  30. 30.Digital root of 99 × 83 =
  31. 31.Digital root of 89863 =
  32. 32.Digital root of 89513 =
  33. 33.Digital root of 33 × 56 =
  34. 34.Digital root of 22 × 87 =
  35. 35.Digital root of 31231 =
  36. 36.Digital root of 86883 =
  37. 37.Digital root of 68476 =
  38. 38.Digital root of 98 × 88 =
  39. 39.Digital root of 81038 =
  40. 40.Digital root of 25197 =

Answer key

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

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