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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 229 · 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 56 × 30 =
  2. 2.Digital root of 69305 =
  3. 3.Digital root of 31457 =
  4. 4.Digital root of 55 × 79 =
  5. 5.Digital root of 78 × 60 =
  6. 6.Digital root of 75 × 31 =
  7. 7.Digital root of 54 × 30 =
  8. 8.Digital root of 83412 =
  9. 9.Digital root of 66065 =
  10. 10.Digital root of 46299 =
  11. 11.Digital root of 13661 =
  12. 12.Digital root of 6645 =
  13. 13.Digital root of 99460 =
  14. 14.Digital root of 931 =
  15. 15.Digital root of 15 × 95 =
  16. 16.Digital root of 15779 =
  17. 17.Digital root of 34088 =
  18. 18.Digital root of 77 × 62 =
  19. 19.Digital root of 83988 =
  20. 20.Digital root of 19 × 14 =
  21. 21.Digital root of 25355 =
  22. 22.Digital root of 52 × 43 =
  23. 23.Digital root of 83 × 73 =
  24. 24.Digital root of 85439 =
  25. 25.Digital root of 43497 =
  26. 26.Digital root of 31 × 83 =
  27. 27.Digital root of 35 × 17 =
  28. 28.Digital root of 54669 =
  29. 29.Digital root of 9322 =
  30. 30.Digital root of 36426 =
  31. 31.Digital root of 9545 =
  32. 32.Digital root of 92279 =
  33. 33.Digital root of 58684 =
  34. 34.Digital root of 22084 =
  35. 35.Digital root of 86 × 36 =
  36. 36.Digital root of 17 × 74 =
  37. 37.Digital root of 38 × 86 =
  38. 38.Digital root of 75 × 57 =
  39. 39.Digital root of 19 × 74 =
  40. 40.Digital root of 14164 =

Answer key

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

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