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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 127 · 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 39 × 27 =
  2. 2.Digital root of 6464 =
  3. 3.Digital root of 77936 =
  4. 4.Digital root of 23 × 21 =
  5. 5.Digital root of 90 × 91 =
  6. 6.Digital root of 26 × 81 =
  7. 7.Digital root of 69503 =
  8. 8.Digital root of 9119 =
  9. 9.Digital root of 20 × 29 =
  10. 10.Digital root of 93660 =
  11. 11.Digital root of 77983 =
  12. 12.Digital root of 95 × 44 =
  13. 13.Digital root of 13 × 45 =
  14. 14.Digital root of 78 × 25 =
  15. 15.Digital root of 50527 =
  16. 16.Digital root of 15 × 17 =
  17. 17.Digital root of 80 × 65 =
  18. 18.Digital root of 99545 =
  19. 19.Digital root of 81 × 84 =
  20. 20.Digital root of 94737 =
  21. 21.Digital root of 19273 =
  22. 22.Digital root of 19 × 84 =
  23. 23.Digital root of 34177 =
  24. 24.Digital root of 37265 =
  25. 25.Digital root of 76 × 97 =
  26. 26.Digital root of 25966 =
  27. 27.Digital root of 72 × 17 =
  28. 28.Digital root of 89479 =
  29. 29.Digital root of 56 × 37 =
  30. 30.Digital root of 50 × 76 =
  31. 31.Digital root of 55874 =
  32. 32.Digital root of 65 × 92 =
  33. 33.Digital root of 4397 =
  34. 34.Digital root of 93526 =
  35. 35.Digital root of 30 × 46 =
  36. 36.Digital root of 97 × 17 =
  37. 37.Digital root of 24742 =
  38. 38.Digital root of 25273 =
  39. 39.Digital root of 62 × 56 =
  40. 40.Digital root of 59242 =

Answer key

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

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