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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 110 · 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 2276 =
  2. 2.Digital root of 70428 =
  3. 3.Digital root of 66565 =
  4. 4.Digital root of 96347 =
  5. 5.Digital root of 50 × 12 =
  6. 6.Digital root of 38 × 19 =
  7. 7.Digital root of 37 × 28 =
  8. 8.Digital root of 61 × 59 =
  9. 9.Digital root of 59 × 62 =
  10. 10.Digital root of 14 × 39 =
  11. 11.Digital root of 93 × 45 =
  12. 12.Digital root of 80 × 54 =
  13. 13.Digital root of 13381 =
  14. 14.Digital root of 61 × 76 =
  15. 15.Digital root of 27 × 55 =
  16. 16.Digital root of 27882 =
  17. 17.Digital root of 16 × 81 =
  18. 18.Digital root of 81 × 32 =
  19. 19.Digital root of 46 × 16 =
  20. 20.Digital root of 11973 =
  21. 21.Digital root of 25 × 74 =
  22. 22.Digital root of 36546 =
  23. 23.Digital root of 1927 =
  24. 24.Digital root of 9452 =
  25. 25.Digital root of 18099 =
  26. 26.Digital root of 57 × 47 =
  27. 27.Digital root of 63 × 54 =
  28. 28.Digital root of 45 × 39 =
  29. 29.Digital root of 5697 =
  30. 30.Digital root of 31755 =
  31. 31.Digital root of 51206 =
  32. 32.Digital root of 18 × 21 =
  33. 33.Digital root of 34157 =
  34. 34.Digital root of 83 × 19 =
  35. 35.Digital root of 15668 =
  36. 36.Digital root of 81797 =
  37. 37.Digital root of 95 × 61 =
  38. 38.Digital root of 65449 =
  39. 39.Digital root of 60423 =
  40. 40.Digital root of 65183 =

Answer key

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

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