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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 386 · 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 × 83 =
  2. 2.Digital root of 27453 =
  3. 3.Digital root of 35 × 32 =
  4. 4.Digital root of 83 × 71 =
  5. 5.Digital root of 73 × 61 =
  6. 6.Digital root of 22 × 29 =
  7. 7.Digital root of 66519 =
  8. 8.Digital root of 17 × 24 =
  9. 9.Digital root of 12 × 51 =
  10. 10.Digital root of 76191 =
  11. 11.Digital root of 31 × 54 =
  12. 12.Digital root of 24 × 60 =
  13. 13.Digital root of 50 × 31 =
  14. 14.Digital root of 16309 =
  15. 15.Digital root of 2665 =
  16. 16.Digital root of 80 × 49 =
  17. 17.Digital root of 71524 =
  18. 18.Digital root of 1545 =
  19. 19.Digital root of 20041 =
  20. 20.Digital root of 34445 =
  21. 21.Digital root of 49 × 96 =
  22. 22.Digital root of 64993 =
  23. 23.Digital root of 44412 =
  24. 24.Digital root of 14 × 64 =
  25. 25.Digital root of 98 × 25 =
  26. 26.Digital root of 35 × 51 =
  27. 27.Digital root of 41794 =
  28. 28.Digital root of 27 × 27 =
  29. 29.Digital root of 82247 =
  30. 30.Digital root of 29 × 40 =
  31. 31.Digital root of 26986 =
  32. 32.Digital root of 77619 =
  33. 33.Digital root of 44979 =
  34. 34.Digital root of 94206 =
  35. 35.Digital root of 64 × 57 =
  36. 36.Digital root of 94852 =
  37. 37.Digital root of 62 × 28 =
  38. 38.Digital root of 78 × 70 =
  39. 39.Digital root of 56788 =
  40. 40.Digital root of 39 × 97 =

Answer key

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

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