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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 140 · 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 49823 =
  2. 2.Digital root of 93 × 32 =
  3. 3.Digital root of 36597 =
  4. 4.Digital root of 22688 =
  5. 5.Digital root of 1157 =
  6. 6.Digital root of 22664 =
  7. 7.Digital root of 73856 =
  8. 8.Digital root of 1109 =
  9. 9.Digital root of 13 × 16 =
  10. 10.Digital root of 96507 =
  11. 11.Digital root of 12 × 31 =
  12. 12.Digital root of 41 × 33 =
  13. 13.Digital root of 13926 =
  14. 14.Digital root of 63809 =
  15. 15.Digital root of 37 × 92 =
  16. 16.Digital root of 27714 =
  17. 17.Digital root of 56 × 63 =
  18. 18.Digital root of 37 × 69 =
  19. 19.Digital root of 36325 =
  20. 20.Digital root of 43 × 33 =
  21. 21.Digital root of 7563 =
  22. 22.Digital root of 21 × 41 =
  23. 23.Digital root of 96576 =
  24. 24.Digital root of 92 × 14 =
  25. 25.Digital root of 71 × 51 =
  26. 26.Digital root of 71 × 23 =
  27. 27.Digital root of 21 × 59 =
  28. 28.Digital root of 52 × 78 =
  29. 29.Digital root of 31 × 94 =
  30. 30.Digital root of 68693 =
  31. 31.Digital root of 49472 =
  32. 32.Digital root of 12843 =
  33. 33.Digital root of 75 × 64 =
  34. 34.Digital root of 20775 =
  35. 35.Digital root of 92550 =
  36. 36.Digital root of 16 × 80 =
  37. 37.Digital root of 76 × 31 =
  38. 38.Digital root of 87015 =
  39. 39.Digital root of 61102 =
  40. 40.Digital root of 30 × 15 =

Answer key

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

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